[1] Univ Paris Diderot Paris 7, Dept Pathophysiol & Epidemiol Resp Dis, INSERM, UMR1152, Paris, France
[2] Univ Bergen, Dept Clin Sci, Bergen, Norway
[3] Univ Verona, Unit Epidemiol & Med Stat, Dept Diagnost & Publ Hlth, Verona, Italy
[4] ISGlobal, Barcelona, Spain
[5] Galdakao Hosp, Pulmonol Dept, Bizkaia, Spain
[6] Hosp Univ San Agustin, Serv Neumol, Aviles, Spain
[7] Univ Huelva, Dept Nursing, Huelva, Spain
[8] Antenne Pediat CIC, Pneumol Pediat, Grenoble, France
[9] Landspitali, Dept Resp Med & Sleep, Reykjavik, Iceland
[10] Univ Gothenburg, Sect Occupat & Environm Med, Gothenburg, Sweden
[11] Umea Univ, Div Occupat & Environm Med, Umea, Sweden
[12] Dept Med Sci Resp Allergy & Sleep Res, Uppsala, Sweden
[13] Univ Basel, Dept Epidemiol & Publ Hlth, Swiss Trop & Publ Hlth Inst, Basel, Switzerland
[14] Tartu Univ Hosp, Lung Clin, Tartu, Estonia
[15] Univ Melbourne, Allergy & Lung Hlth Unit, Sch Populat & Global Hlth, Melbourne, Vic, Australia
[16] Imperial Coll, Populat Hlth & Occupat Dis, Natl Heart & Lung Inst, London, England