1. School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2. Department of Microbiology and Immunology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3. Department of Clinical Immunology and Transfusion Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
5. Clinical Pharmacology, Pharmacy and Environmental Medicine, Department of Public Health, University of Southern Denmark, Odense, Denmark
6. Region Blekinge, Karlskrona, Sweden
7. Department of Public Health, University of Copenhagen, Copenhagen, Denmark
8. Department of Occupational and Environmental Medicine, Copenhagen University Hospital –Bispebjerg and Frederiksberg, Copenhagen, Denmark
9. Department of Public Health, Environments & Society, London School of Hygiene & Tropical Medicine, London, UK
10. Department of Infectious Diseases, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
11. Occupational and Environmental Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden