About the Authors

Tohr Nilsson

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Writing – original draft, Writing – review & editing

Tohr.Nilsson@envmed.umu.se

Affiliation Occupational and Environmental Medicine, Department of Public Health & Clinical Medicine, Umeå University, Umeå, Sweden

Jens Wahlström

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Occupational and Environmental Medicine, Department of Public Health & Clinical Medicine, Umeå University, Umeå, Sweden

Lage Burström

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Occupational and Environmental Medicine, Department of Public Health & Clinical Medicine, Umeå University, Umeå, Sweden

Competing Interests

The study was supported by Swedish AFA Insurance, The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript, this does not alter our adherence to the PLOS ONE policies on sharing data and material.