1. School of Social and Community Medicine; University of Bristol; UK
2. Division of Community Health Sciences; St George's; University of London; UK
3. Institut for Inhalation Biology; Helmholtz Zentrum München; Neuherberg; Germany
4. Respiratory Epidemiology and Public Health Group; National Heart and Lung Institute; Imperial College; London; UK
5. University Children's Hospital Munich; Munich; Germany
6. University of Ulm; Institute of Epidemiology and Medical Biometry; Ulm; Germany
7. Department of Pediatrics and Adolescents; Division of Cardiology and Pulmonology; Innsbruck Medical University; Innsbruck; Austria
8. Department of Pediatric Pneumology; Allergy and Neonatology; Hannover Medical School; Hannover; Germany
9. Research Institute for the Prevention of Allergic Diseases; Children's Department; Marien-Hospital; Wesel; Germany
10. University Children's Hospital; Albert Ludwigs University; Freiburg; Germany
11. Division of Pulmonary Medicine; University Hospitals of Geneva; Switzerland
12. Department of Pediatrics and Child Health; University of Manitoba; Winnipeg; Manitoba; Canada
13. Occupational and Environmental Lung Disease Unit; University of British Colombia; Vancouver; BC; Canada
14. James Hogg iCAPTURE Center; University of British Columbia; Vancouver; BC; Canada
15. Research Institute of Medical Genetics of the Siberian Branch of Russian Academy of Medical Sciences; Tomsk; Russia
16. Siberian State Medical University; Tomsk; Russia
17. Division of Pediatric Pulmonology; Allergy and Immunology; Children's Hospital of Pittsburgh; University of Pittsburgh School of Medicine; Pittsburgh; PA; USA
18. Department of Pediatrics; University of Connecticut Health Center; Farmington; CT; USA
19. Behavioral Sciences Research Institute; University of Puerto Rico; San Juan; PR
20. Division of Pediatric Pulmonology; Hospital Nacional de Niños; San José; Costa Rica
21. Institute of Environmental Medicine; Karolinska Institutet; Stockholm; Sweden
22. Department of Biosciences and Nutrition; Karolinska Institutet; Stockholm; Sweden
23. Department of Epidemiology; University Medical Center Groningen; University of Groningen; Groningen; The Netherlands
24. Department of Pediatric Pulmonology and Pediatric Allergology; Beatrix Children's Hospital; University Medical Center Groningen; University of Groningen; Groningen; The Netherlands
25. Centre for Prevention and Health Services Research; National Institute for Public Health and the Environment; Bilthoven; The Netherlands
26. Pediatric Pneumology and Immunology; Charité; Berlin; Berlin; Berlin; Berlin; Germany
27. Helmholtz Zentrum München; German Research Centre for Environmental Health; Institute of Epidemiology I; Neuherberg; Germany
28. Department of Human Genetics; University of Chicago; Chicago; IL; USA
29. Departments of Human Genetics; Statistics, and Medicine; University of Chicago; Chicago; IL; USA
30. Wellcome Trust Centre for Human Genetics; University of Oxford; Oxford; UK
31. National Heart and Lung Institute (NHLI); Imperial College; London; UK
32. Channing Laboratory; Brigham and Women's Hospital and Harvard Medical School; Boston; MA; USA