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Mixter, S., Mathiassen, S. E., Hallman, D. & Bjärntoft, S. (2019). Alternations between physical and cognitive tasks – does temporal pattern and cognitive task difficulty influence fatigue development?. In: : . Paper presented at 10th International Scientific Conference on the Prevention of Work-related Musculoskeletal Disorders, 2-5 September 2019, Bologna, Italy.
Open this publication in new window or tab >>Alternations between physical and cognitive tasks – does temporal pattern and cognitive task difficulty influence fatigue development?
2019 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Background

Some evidence suggests that alternations between physical and cognitive work tasks may be a viable option for job rotation, since production can be maintained without excessive fatigue. Effects on fatigue and pain of the temporal distribution of physical and cognitive tasks are, however, uncertain. The aim of this study was to examine development of fatigue and pain during physical and cognitive work tasks of different difficulties, alternating in different temporal patterns.

Methods

Fifteen women performed alternating bouts of a physical task (phys) and a cognitive task (CT) for a total of 100 minutes. Four experimental conditions were tested in a repeated-measures design. Conditions 1 and 2 consisted of five long-cycle sequences (phys+CT, 14+6 minutes), and in conditions 3 and 4, 10 short-cycle sequences (7+3 minutes) were performed. Each temporal pattern was completed with an easy or a difficult CT. Muscle fatigue was assessed using surface electromyography (EMG) from the right trapezius, and perceived fatigue and pain in the right shoulder was assessed using CR-10 ratings. Effects of time and experimental condition on these outcomes were tested using ANOVA.

Results

Perceived fatigue and pain in right shoulder after pipetting work bouts increased in all four conditions (long-cycle, fatigue F=5.68, p<0.001, pain F=4.12, p=0.01; short-cycle, fatigue F=10.59, p<0.001, pain F=5.45, p<0.001). Trapezius EMG did not change significantly across work bouts (long-cycle, F=2.14, p=0.09; short-cycle, F=1.03, p=0.42). Irrespective of the temporal alternation pattern, neither EMG nor fatigue and pain were influenced by CT difficulty (CT main effect and CT×time interaction: EMG, all F≤2.5, p≥0.1; fatigue and pain, all F≤2.0, p≥0.7).

Conclusions

The temporal pattern of alternations between a repetitive physical task and a CT did not influence fatigue development, and the difficulty level of the CT did not significantly influence fatigue and pain, irrespective of the temporal alternation pattern.

National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30731 (URN)
Conference
10th International Scientific Conference on the Prevention of Work-related Musculoskeletal Disorders, 2-5 September 2019, Bologna, Italy
Funder
AFA Insurance, 120223
Available from: 2019-10-04 Created: 2019-10-04 Last updated: 2019-10-14Bibliographically approved
Mixter, S., Mathiassen, S. E. & Hallman, D. (2019). Alternations between physical and cognitive tasks in repetitive work – Effect of cognitive task difficulty on fatigue development in women. Ergonomics, 62(8), 1008-1022
Open this publication in new window or tab >>Alternations between physical and cognitive tasks in repetitive work – Effect of cognitive task difficulty on fatigue development in women
2019 (English)In: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 62, no 8, p. 1008-1022Article in journal (Refereed) Published
Abstract [en]

In a context of job rotation, this study determined the extent to which the difficulty of a cognitive task (CT) interspersed between bouts of repetitive, low-intensity work (pipetting) influences recovery from fatigue. Fifteen participants performed three experimental sessions, each comprising 10 repeats of a 7 min + 3 min combination of pipetting and CT. The CT was easy, moderate or hard. Surface electromyography (EMG amplitude of the forearm extensor and trapezius muscles) and self-reports was used to assess fatigability. Perceived fatigue and trapezius EMG amplitude increased during sessions. CT difficulty influenced fatigue development only little, besides forearm extensor EMG increasing more in CT3 than in CT1 and CT2. During CT bouts, fatigability recovered, and to a similar extent irrespective of CT. Thus, CT difficulty influenced recovery of perceived as well as performance fatigability to a minor extent, and may not be a critical issue in job rotation comprising alternating physical and cognitive tasks.

Keywords
Repetitive work, fatigue, recovery, physical load, mental load, variation
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-26536 (URN)10.1080/00140139.2019.1614229 (DOI)000469647700001 ()31056015 (PubMedID)2-s2.0-85065848351 (Scopus ID)
Funder
AFA Insurance, 120223
Available from: 2018-05-03 Created: 2018-05-03 Last updated: 2019-08-19Bibliographically approved
Hallman, D., Holtermann, A., Dencker-Larsen, S., Birk Jorgensen, M. & Nørregaard Rasmussen, C. (2019). Are trajectories of neck-shoulder pain associated with sick leave and work ability in workers? A 1-year prospective study. BMJ Open, 9(e022006)
Open this publication in new window or tab >>Are trajectories of neck-shoulder pain associated with sick leave and work ability in workers? A 1-year prospective study
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2019 (English)In: BMJ Open, ISSN 2044-6055, E-ISSN 2044-6055, Vol. 9, no e022006Article in journal (Refereed) Published
Abstract [en]

ObjectivesThe study aimed to determine the extent to which latent trajectories of neck–shoulder pain (NSP) are associated with self-reported sick leave and work ability based on frequent repeated measures over 1 year in an occupational population.

MethodsThis longitudinal study included 748 Danish workers (blue-collar, n=620; white collar, n=128). A questionnaire was administered to collect data on personal and occupational factors at baseline. Text messages were used for repeated measurements of NSP intensity (scale 0–10) over 1 year (14 waves in total). Simultaneously, selfreported sick leave (days/month) due to pain was assessed at 4-week intervals, while work ability (scale 0–10) was assessed using a single item (work ability index) at 12-week intervals over the year. Trajectories of NSP, distinguished by latent class growth analysis, were usedas predictors of sick leave and work ability in generalised estimation equations with multiple adjustments.

ResultsSick leave increased and work ability decreased across all NSP trajectory classes (low, moderate, strong fluctuating and severe persistent pain intensity). In the adjusted model, the estimated number of days on sickleave was 1.5 days/month for severe persistent NSP compared with 0.1 days/month for low NSP (relativ risk=13.8, 95% CI 6.7 to 28.5). Similarly, work ability decreased markedly for severe persistent NSP (OR=12.9,95% CI 8.5 to 19.7; median 7.1) compared with low NSP (median 9.5).

ConclusionSevere persistent NSP was associatedwith sick leave and poor work ability over 1 year amongworkers. Preventive strategies aiming at reducing severepersistent NSP among working populations are needed.

Keywords
LCGA; chronic pain; neck pain; occupational; pain trajectories
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-25568 (URN)10.1136/bmjopen-2018-022006 (DOI)000471144900020 ()30898794 (PubMedID)2-s2.0-85063278240 (Scopus ID)
Projects
PAINclass
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare
Note

Funding agency:

- Danish Government (Satspulje) 

Available from: 2017-11-22 Created: 2017-11-22 Last updated: 2019-09-30Bibliographically approved
Januario, L., Karstad, K., Rugulies, R., Bergström, G., Holtermann, A. & Hallman, D. (2019). Association between psychosocial working conditions and perceived physical exertion among eldercare workers: a cross-sectional multilevel analysis of nursing homes, wards and workers. International Journal of Environmental Research and Public Health, 16(19), Article ID 3610.
Open this publication in new window or tab >>Association between psychosocial working conditions and perceived physical exertion among eldercare workers: a cross-sectional multilevel analysis of nursing homes, wards and workers
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2019 (English)In: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 16, no 19, article id 3610Article in journal (Refereed) Published
Abstract [en]

This cross-sectional multilevel study aims at investigating the associations between psychosocial working conditions of different workplace levels and perceived physical exertion among eldercare workers. Data were obtained from the ‘Danish Observational Study of Eldercare work and musculoskeletal disorderS’ (DOSES) study, including 536 eldercare workers, nested in 126 wards and 20 nursing homes. Psychosocial working conditions were measured by the Copenhagen Psychosocial Questionnaire (COPSOQ). The physical workload was measured with a self-administered scale (0–10) rating perceived physical exertion. Multilevel linear mixed models were used to determine associations of psychosocial conditions between nursing homes, wards, and workers with physical exertion. Most of the variance in the perceived physical exertion was explained by differences between workers (83%), but some variance was explained by wards (11%) and nursing homes (6%). Workers employed in nursing homes with low influence (p = 0.01) and poor leadership (p = 0.02), and in wards with high quantitative demands (p = 0.03), high work pace (p < 0.001), and low justice (p = 0.01) were at increased risk of reporting higher physical exertion. The strongest associations were found for low influence, low quality of leadership, and high work pace at nursing homes and ward levels. In conclusion, improving specific psychosocial working conditions at nursing home and ward levels may be of particular importance to reduce excessive physical workload in eldercare workers

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
healthcare; multilevel analysis; nursing home; physical exertion; psychosocial factors; workload
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30694 (URN)10.3390/ijerph16193610 (DOI)31561538 (PubMedID)2-s2.0-85072716023 (Scopus ID)
Projects
AFA - DOSHIG
Funder
AFA Insurance, 180076
Available from: 2019-09-26 Created: 2019-09-26 Last updated: 2019-10-14Bibliographically approved
Hallman, D., Mathiassen, S. E., van der Beek, A., Jackson, J. & Coenen, P. (2019). Calibration of self-reported time spent sitting, standing and walking among office workers: a compositional data analysis. International Journal of Environmental Research and Public Health, 16(17), Article ID 3111.
Open this publication in new window or tab >>Calibration of self-reported time spent sitting, standing and walking among office workers: a compositional data analysis
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2019 (English)In: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 16, no 17, article id 3111Article in journal (Refereed) Published
Abstract [en]

We developed and evaluated calibration models predicting objectively measured sitting, standing and walking time from self-reported data using a compositional data analysis (CoDA) approach. A total of 98 office workers (48 women) at the Swedish Transport Administration participated. At baseline and three-months follow-up, time spent sitting, standing and walking at work was assessed for five working days using a thigh-worn accelerometer (Actigraph), as well as by self-report (IPAQ). Individual compositions of time spent in the three behaviors were expressed by isometric log-ratios (ILR). Calibration models predicting objectively measured ILRs from self-reported ILRs were constructed using baseline data, and then validated using follow-up data. Un-calibrated self-reports were inaccurate; root-mean-square (RMS) errors of ILRs for sitting, standing and walking were 1.21, 1.24 and 1.03, respectively. Calibration reduced these errors to 36% (sitting), 40% (standing), and 24% (walking) of those prior to calibration. Calibration models remained effective for follow-up data, reducing RMS errors to 33% (sitting), 51% (standing), and 31% (walking). Thus, compositional calibration models were effective in reducing errors in self-reported physical behaviors during office work. Calibration of self-reports may present a cost-e_ective method for obtaining physical behavior data with satisfying accuracy in large-scale cohort and intervention studies.

Keywords
physical activity; sedentary behavior; oce work; accuracy; calibration; compositional data analysis
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30597 (URN)10.3390/ijerph16173111 (DOI)000487037500106 ()31461868 (PubMedID)2-s2.0-85071631368 (Scopus ID)
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-01761
Available from: 2019-08-28 Created: 2019-08-28 Last updated: 2019-10-14Bibliographically approved
Johansson, E., Mathiassen, S. E., Lund Rasmussen, C., Lyskov, E. & Hallman, D. (2019). Compositional analysis of sedentary behavior and physical activity during work and leisure among male and female office workers. In: : . Paper presented at 6th International Conference on Ambulatory Monitoring of Physical Activity and Movement (ICAMPAM), 26-28 June 2019, Maastricht, The Netherlands. , Article ID 1-45.
Open this publication in new window or tab >>Compositional analysis of sedentary behavior and physical activity during work and leisure among male and female office workers
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2019 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Objective: To determine the extent to which male and female office workers differ in their time-use composition of sitting behaviors (SB) and physical activity (PA) during work and leisure.

Methods: SB and PA was measured using thigh-worn accelerometers for up to 8 full days in 77 male and 104 female office workers. Daily time-use compositions during work and leisure were described in four exhaustive categories, i.e. sitting in short (<30  min) and long (≥30 min) bouts, standing, and active behaviors. Following a compositional data analysis procedure, isometric log-ratios (ilr) were calculated to express time in sitting relative to non-sitting, short relative to long sitting bouts, and standing relative to active behaviors. Differences between sexes (men and women) and domains (work and leisure) were examined on the basis of these ilrs using ANOVA.

Results: At work, time spent sitting in short bouts, long bouts, standing, and active was, on average, 34%, 36%, 22% and 8% among men and 31%, 37%, 24% and 8% among women. Corresponding proportions during leisure were 34%, 25%, 28% and 13% among men and 29%, 28%, 31% and 12% among women. Time spent sitting relative to non-sitting differed significantly between work and leisure (ilr sitting-vs-non-sitting, partial eta squared=0.09, p<0.01). During leisure, men used proportionally more time than women in short sitting bouts (ilr short-vs-long, partial eta squared=0.06, p<0.01) and spent more time in active behaviors relative to standing (ilr standing-vs-active, partial eta squared=0.04, p<0.01). No significant sex differences were observed during work (p>0.05).

Conclusions:  The leisure behavior observed among men is probably more beneficial for health than that observed for women. However, both men and women spent a major proportion of their time sitting, both at and outside their office work, and they were, in general, only little active. Thus, both men and women could benefit from interventions to reduce SB and increase PA both at work and during leisure.

National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30450 (URN)
Conference
6th International Conference on Ambulatory Monitoring of Physical Activity and Movement (ICAMPAM), 26-28 June 2019, Maastricht, The Netherlands
Note

ICAMPAM 2019 Poster abstracts: https://ismpb.org/wp-content/uploads/2019/08/ICAMPAM2019PosterAbstracts.pdf

Available from: 2019-07-29 Created: 2019-07-29 Last updated: 2019-09-23
Coenen, P., Mathiassen, S. E., van der Beek, A. & Hallman, D. (2019). Correction of bias in self-reported sitting time among office workers – a study based on compositional data analysis. Scandinavian Journal of Work, Environment and Health
Open this publication in new window or tab >>Correction of bias in self-reported sitting time among office workers – a study based on compositional data analysis
2019 (English)In: Scandinavian Journal of Work, Environment and Health, ISSN 0355-3140, E-ISSN 1795-990XArticle in journal (Refereed) Epub ahead of print
Abstract [en]

Objective: Emerging evidence suggests that excessive sitting has negative health effects. However, this evidence largely relies on research using self-reported sitting time, which is known to be biased. To correct this bias, we aimed at developing a calibration model estimating "true" sitting from self-reported sitting.

Methods: Occupational sitting time was estimated by self-reports (the International Physical Activity Questionnaire) and objective measurements (thigh-worn accelerometer) among 99 Swedish office workers at a governmental agency, at baseline and 3 and 12 months afterwards. Following compositional data analysis procedures, both sitting estimates were transformed into isometric log-ratios (ILR). This effectively addresses that times spent in various activities are inherently dependent and can be presented as values of only 0−100%. Linear regression was used to develop a simple calibration model estimating objectively measured "true" sitting ILR (dependent variable) from self-reported sitting ILR (independent variable). Additional self-reported variables were then added to construct a full calibration model. Performance of the models was assessed by root-mean-square (RMS) differences between estimated and objectively measured values. Models developed on baseline data were validated using the follow-up datasets.

Results: Uncalibrated self-reported sitting ILR showed an RMS error of 0.767. Simple and full calibration models (incorporating body mass index, office type, and gender) reduced this error to 0.422 (55%) and 0.398 (52%), respectively. In the validations, model performance decreased to 57%/62% (simple models) and 57%/62% (full models) for the two follow-up data sets, respectively.

Conclusions: Calibration adjusting for errors in self-reported sitting led to substantially more correct estimates of "true" sitting than uncalibrated self-reports. Validation indicated that model performance would change somewhat in new datasets and that full models perform no better than simple models, but calibration remained effective.

Keywords
calibration, calibration model, compositional data analysis, occupational health, sedentary behavior
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-28757 (URN)10.5271/sjweh.3827 (DOI)
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1761
Available from: 2018-12-04 Created: 2018-12-04 Last updated: 2019-09-30Bibliographically approved
Bergsten, E. L., Haapakangas, A., Larsson, J., Jahncke, H. & Hallman, D. (2019). Effects of relocation to activity-based workplaces on perceived productivity: importance of change-oriented leadership.
Open this publication in new window or tab >>Effects of relocation to activity-based workplaces on perceived productivity: importance of change-oriented leadership
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2019 (English)In: Article in journal (Refereed) Submitted
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30121 (URN)
Funder
Swedish Transport Administration, 2015/118
Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-06-25Bibliographically approved
Bergsten, E. L., Wijk, K. & Hallman, D. (2019). Implementing Activity-based Workplaces (ABW) and the importance of participating in process activities. In: : . Paper presented at 10th International Scientific Conference on the Prevention of Work-Related Musculoskeletal Disorders (PREMUS), September 2019, Bologna..
Open this publication in new window or tab >>Implementing Activity-based Workplaces (ABW) and the importance of participating in process activities
2019 (English)Conference paper, Oral presentation only (Refereed)
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30641 (URN)
Conference
10th International Scientific Conference on the Prevention of Work-Related Musculoskeletal Disorders (PREMUS), September 2019, Bologna.
Available from: 2019-09-10 Created: 2019-09-10 Last updated: 2019-10-04Bibliographically approved
Gupta, N., Hallman, D., Dumuid, D., Vij, A., Lund Rasmussen, C., Birk Jørgensen, M. & Holtermann, A. (2019). Movement behavior profiles and obesity: a latent profile analysis of 24-h time-use composition among Danish workers. International Journal of Obesity
Open this publication in new window or tab >>Movement behavior profiles and obesity: a latent profile analysis of 24-h time-use composition among Danish workers
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2019 (English)In: International Journal of Obesity, ISSN 0307-0565, E-ISSN 1476-5497Article in journal (Refereed) Epub ahead of print
Abstract [en]

Background/objectives

An element of obesity prevention is increasing total physical activity energy expenditure. However, this approach does not incorporate the balance of various movement behaviors—physical activity, sedentary behaviors and sleep - across domains of the day. We aimed to identify time-use profiles over work and leisure, termed ‘movement behavior profiles’ and to investigate their association with obesity.

Subjects/methods

Eight-hundred-and-seven workers completed (a) thigh accelerometry and diaries to determine their 24-h composition of behaviors (sedentary and standing, light physical activity and moderate-to-vigorous physical activity at work and leisure, and time in bed) and (b) obesity measurements. Movement behavior profiles were determined using latent profile analyses of isometric log-ratios of the 24-h composition, and labeled according to animal movement behavior traits. Linear models were applied to determine the association between profiles and obesity.

Results

Four profiles were identified, labeled as “Chimpanzees” (n = 226), “Lions” (n = 179), “Ants” (n = 244), and “Koalas” (n = 158). “Chimpanzees” work time was evenly distributed between behaviors while their leisure time was predominantly active. Compared to Chimpanzees, “Lions” were more active at work and sedentary during leisure and spent more time in bed; “Ants” were more active at work and during leisure; “Koalas” were more sedentary at work and leisure and spent similar time in bed. With “Chimpanzees” as reference, “Lions” had least favorable obesity indicators: +2.0 (95% confidence interval [CI] 0.6, 3.4) %body fat, +4.3 cm (1.4, 7.3) waist circumference and +1.0 (2.0, 0.0) Body Mass Index (BMI), followed by “Koalas” +2.0 (0.4, 3.7) %body fat, +3.1 cm (0.1, 6.0) waist circumference, and +0.8 (−0.30, 1.94) BMI. No significant differences were found between “Chimpanzees” and “Ants”.

Conclusions

Movement behavior profiles across work and leisure time-use compositions are associated with obesity. Achieving adequate balance between work and leisure movement behaviors should be further investigated as a potential obesity prevention strategy.

Place, publisher, year, edition, pages
Nature Publishing Group, 2019
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-30568 (URN)10.1038/s41366-019-0419-8 (DOI)31341260 (PubMedID)2-s2.0-85069632196 (Scopus ID)
Note

Funding agency:

- Danish work environment research fund (journal number 01–2015–03) - Danish government (satspulje)

Available from: 2019-08-23 Created: 2019-08-23 Last updated: 2019-08-23Bibliographically approved
Projects
Effekter av aktivitetsbaserade kontor på stillasittande, koncentration och hälsa i jämförelse med traditionella kontor [TRV 2015/43010]; University of Gävle; Publications
Haapakangas, A., Hallman, D., Mathiassen, S. E. & Jahncke, H. (2019). The effects of moving into an activity-based office on communication, social relations and work demands – A controlled intervention with repeated follow-up. Journal of Environmental Psychology, 66, Article ID 101341. Haapakangas, A., Hallman, D., Mathiassen, S. E. & Jahncke, H. (2018). Self-rated productivity and employee well-being in activity-based offices: the role of environmental perceptions and workspace use. Building and Environment, 145, 115-124Jahncke, H., Persson, L. & Hallman, D. (2017). Aktivitetsbaserade arbetsplatser: Koncentration, stillasittande och hälsa i jämförelse med traditionella kontor: Kartläggning år 2015-2017. Högskolan i GävleJahncke, H., Edvinsson, J., Mathiassen, S. E. & Hallman, D. (2016). Delrapport kontor A: Effekter av aktivitetsbaserade kontor på stillasittande, koncentration och hälsa i jämförelse med traditionella kontor. Gävle: Högskolan i GävleJahncke, H., Edvinsson, J., Mathiassen, S. E. & Hallman, D. (2016). Delrapport kontor B: Effekter av aktivitetsbaserade kontor på stillasittande, koncentration och hälsa i jämförelse med traditionella kontor. Gävle: Högskolan i GävleJahncke, H., Edvinsson, J., Mathiassen, S. E. & Hallman, D. (2016). Delrapport kontor C: Effekter av aktivitetsbaserade kontor på stillasittande, koncentration och hälsa i jämförelse med traditionella kontor. Gävle: Högskolan i GävleJahncke, H., Edvinsson, J., Mathiassen, S. E. & Hallman, D. (2016). Delrapport kontor D: Effekter av aktivitetsbaserade kontor på stillasittande, koncentration och hälsa i jämförelse med traditionella kontor. Gävle: Högskolan i GävleJahncke, H., Edvinsson, J., Mathiassen, S. E. & Hallman, D. (2016). Delrapport kontor E: Effekter av aktivitetsbaserade kontor på stillasittande, koncentration och hälsa i jämförelse med traditionella kontor. Gävle: Högskolan i Gävle
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2741-1868

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