[1] CREAL Ctr Res Environm Epidemiol, Barcelona 08003, Spain
[2] Hosp Mar Res Inst IMIM, Barcelona, Spain
[3] CIBERESP, Barcelona, Spain
[4] Univ Pompeu Fabra, Dept Expt & Hlth Sci, Barcelona, Spain
[5] Univ Zurich, Swiss Inst Allergy & Asthma Res SIAF, Davos, Switzerland
[6] CNRS Inst Biol Sci, Villejuif, France
[7] Univ Hosp Ghent, URL Upper Airways Res Lab, Ghent, Belgium
[8] Oslo Univ Hosp, Dept Paediat, Oslo, Norway
[9] Univ Oslo, N-0316 Oslo, Norway
[10] Univ Arizona, Arizona Resp Ctr, Tucson, AZ USA
[11] Helsinki Univ Hosp, Dept Allergy, Skin & Allergy Hosp, Helsinki, Finland
[12] Univ Munich, Dept Pulm & Allergy, Univ Childrens Hosp Munich, Munich, Germany
[13] INSERM, CESP Ctr Res Epidemiol & Populat Hlth, U1018, Resp & Environm Epidemiol Team, Villejuif, France
[14] Univ Paris 11, UMRS 1018, F-94807 Villejuif, France
[15] Charite, Inst Social Med Epidemiol & Hlth Econ, D-13353 Berlin, Germany
[16] NHLBI, Div Lung Dis, NIH, Dept Hlth & Human Serv, Bethesda, MD 20892 USA
[17] Univ Groningen, Dept Pediat Pulmonol & Pediat Allergol, Beatrix Childrens Hosp, GRIAC Res Inst,Univ Med Ctr Groningen, Groningen, Netherlands
[18] Med Univ Vienna, Div Immunopathol, Dept Pathophysiol & Allergy Res, Ctr Pathophysiol Infectiol & Immunol, Vienna, Austria
[19] Univ Groningen, Univ Med Ctr Groningen, Lab Allergol & Pulm Dis, Dept Pathol & Med Biol,GRIAC Res Inst, Groningen, Netherlands
[20] Univ Groningen, Univ Med Ctr Groningen, Dept Resp Med, Beatrix Childrens Hosp,GRIAC Res Inst, Groningen, Netherlands
[21] Univ Grenoble 1, INSERM, Team Environm Epidemiol Appl Reprod & Resp Hlth, U823, Grenoble, France
[22] Univ Utrecht, Julius Ctr Hlth Sci & Primary Care, Univ Med Ctr Utrecht, NL-3508 TC Utrecht, Netherlands
[23] Leiden Univ, Med Ctr, Dept Pulmonol, Leiden, Netherlands
[24] Univ Amsterdam, Acad Med Ctr, Dept Pulmonol, NL-1105 AZ Amsterdam, Netherlands
[25] Univ Pompeu Fabra, ICREA Complex Syst Lab, Barcelona, Spain
[26] EPAR U707 INSERM, Paris, France
[27] EPAR UMR S UPMC, Paris, France
[28] Ctr Publ Hlth Res CSISP, Div Environm & Hlth, Valencia, Spain
[29] Univ Valencia, Sch Nursing, E-46003 Valencia, Spain
[30] UMR Inserm U1027, Toulouse, France
[31] Univ Toulouse 3, F-31062 Toulouse, France
[32] Univ Crete, Dept Social Med, Iraklion, Greece
[33] Univ Ghent, Dept Resp Dis, Lab Immunoregulat & Mucosal Immunol, Ghent, Belgium
[34] World Hlth Org Collaborating Ctr Asthma & Rhiniti, Montpellier, France
[35] Hop Arnaud de Villeneuve, Univ Hosp Montpellier, Montpellier, France
[36] Paris Descartes Univ, Dept Publ Hlth & Biostat, Paris, France
[37] Helmholtz Zentrum, Inst Epidemiol 1, Munich, Germany
[38] Univ Paris 06, Grp Hosp Trousseau La Roche Guyon, APHP, Ctr Asthme & Allergies, Paris, France
[39] Univ Groningen, Dept Epidemiol, GRIAC Res Inst, Univ Med Ctr Groningen, Groningen, Netherlands
[40] Natl Sch Publ Hlth, Athens, Greece
[41] Med Univ Lodz, Dept Immunol Rheumatol & Allergy, Lodz, Poland
[42] Charite Campus Virchow, Dept Pneumol & Immunol, Berlin, Germany
[43] Biomax Informat AG, Munich, Germany
[44] Paris Municipal Dept Social Act Childhood & Hlth, Paris, France
[45] Bradford Teaching Hosp Fdn Trust, Bradford Inst Hlth Res, Bradford, W Yorkshire, England
[46] Bradford Royal Infirm, Bradford, W Yorkshire, England
[47] EFA European Federat Allergy & Airways Dis Patien, Brussels, Belgium
[48] CHU Grenoble, F-38043 Grenoble, France
[49] Univ Grenoble 1, INSERM, U823, Inst Albert Bonniot, Grenoble, France
[50] Reg Hlth Serv Lazio Reg, Dept Epidemiol, Rome, Italy