1. Institute for Prevention and Occupational Medicine of the German Social Accident Insurance; Ruhr-Universität Bochum (IPA); Bochum Germany
2. ZAUM- Center of Allergy & Environment; Helmholtz Zentrum München/Technical Universität München; Christine Kühne Center for Allergy Research and Education (CK-CARE); Member of the German Center of Lung Research (DZL); Munich Germany
3. Indoor Biotechnologies Ltd; Cardiff UK
4. Interdepartmental Centre of Bioclimatology; University of Florence; Allergy and Clinical Immunology Section; Azienda Sanitaria di Prato; Prato Italy
5. Department of Chest Diseases; University Hospital Strasbourg; Strasbourg France
6. Division of Environmental Epidemiology; Institute for Risk Assessment Sciences (IRAS); Utrecht University; Utrecht the Netherlands
7. Department of Chemical and Biological Work Environment/National Institute of Occupational Health; Institute of Medical Biology; University in Tromsø; Tromsø Norway
8. Centre for Occupational and Environmental Health Research; School of Public Health and Family Medicine, University of Cape Town; Cape Town South Africa
9. Department of Public Health; Experimental and Forensic Medicine of the University of Pavia; Pavia Italy
10. Occupational Physician's Division; Local Health Authority of Sassari; Sassari Italy
11. Department of Allergy; Hospital La Paz Institute for Health Research (IdiPAZ) and CIBER of Respiratory Diseases CIBERES; Madrid Spain
12. Department of Public Health; Section for Environment; Occupation and Health; Aarhus University; Aarhus Denmark
13. Nofer Institute of Occupational Medicine; Lodz Poland
14. INSERM; Equipe Epidémiologie des allergies et des maladies respiratorires UMR-S 707; Paris France
15. EPAR; Faculté de Médecine Saint-Antoine; UPMC; Paris France