1. Department of Allergy and Respiratory Medicine, Skåne University Hospital, Sweden
2. Division of Occupational and Environmental Medicine, Lund University, Sweden
3. Clinical Epidemiology and Biostatistics, School of Health Sciences, Örebro University, Sweden
4. School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, Gothenburg University, Sweden
5. Occupational and Environmental Medicine, Sahlgrenska University Hospital, Sweden
6. Division for Sustainable Health, Umeå University, Sweden