1. Asthma and Airway Disease Research Center,
2. ISGlobal, Barcelona, Spain;
3. Department of Cellular and Molecular Medicine,
4. Department of Clinical Science and Education and
5. Sachs’ Children’s and Youth Hospital, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden;
6. Universitat Pompeu Fabra, Barcelona, Spain;
7. CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain;
8. Hospital del Mar Medical Research Institute, Barcelona, Spain;
9. ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain;
10. CIBER de Enfermedades Infecciosas (CIBERINFEC), Barcelona, Spain;
11. Department of Molecular and Cellular Biology,
12. BIO5 Institute, and
13. Department of Epidemiology and Biostatistics, University of Arizona Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona;
14. Groningen Research Institute for Asthma and COPD, Groningen, the Netherlands;
15. Department of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children’s Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands;
16. Institute for Advanced Biosciences, UGA-INSERM U1209-CNRS UMR5309, Site Santé, Allée des Alpes, 38700 La Tronche, France;
17. Cardiovascular Risk and Nutrition Group and
18. CIBER de Fisiopatología de la Obesidad y Nutricion (CIBEROBN), Institute of Health Carlos III, Madrid, Spain;
19. Bradford Institute for Health Research, Bradford, United Kingdom;
20. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California;
21. Department of Epidemiology, Lazio Regional Health Service, Rome, Italy;
22. Nursing School, Universitat de València, Valencia, Spain;
23. FISABIO–Universitat Jaume I–Universitat de València Joint Research Unit of Epidemiology and Environmental Health, Valencia, Spain;
24. Pediatrics Service, Hospital de Zumárraga, Gipuzkoa, Spain;
25. Group of Environmental Epidemiology and Child Development, Biodonostia Health Research Institute, San Sebastian, Spain;
26. University Hospital Montpellier, France; and
27. Respiratory and Environmental Epidemiology Team, INSERM 1018, CESP Centre, Villejuif, France