From the Finnish Institute of Occupational Health (Dr Koskela, Dr Oksa); The Outpatient Clinic of Occupational Medicine, Tampere University Hospital, Tampere, Finland (Dr Koskela); Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland (Dr Koskela, Dr Sauni, Dr Uitti, Dr Lehtimäki); The Immunopharmacology Research Group, Faculty of Medicine and Health Technology, Tampere University, and Tampere University Hospital, Tampere, Finland (Dr Moilanen, Dr Hämäläinen); and Allergy Centre, Tampere University Hospital, Tampere, Finland (Dr Lehtimäki).
Funding sources: This work was supported by grants 104084 and 111096 from The Finnish Work Environment Fund to The Finnish Institute of Occupational Health.
Conflict of interest: E.M.: The Academy of Finland, research grant to another research project, EU/ERDF Research funding to another research project, Tampere Tuberculosis Foundation, research grant to another research project, Competitive Research Funding (VTR Funding) by Tampere University Hospital, to another research project.
Ethical statement: Participation was voluntary, and all participants gave written informed consent. Ethical approval was obtained from the Coordinating Ethics Committee of the Helsinki University Hospital.
Koskela, Sauni, Uitti, Oksa, Moilanen, Hämäläinen, and Lehtimäki have no relationships/conditions/circumstances that present potential conflict of interest.
The JOEM editorial board and planners have no financial interest related to this research.
Address correspondence to: Kirsi Koskela, MD, Finnish Institute of Occupational Health, P.O. Box 486, FI-33101 Tampere, Finland ([email protected]).
