[1] Stanford Univ, Sean N Parker Ctr Allergy & Asthma Res, 240 Pasteur Dr BMI Rm 1755, Stanford, CA 94304 USA
[2] Stanford Univ, Dept Med, Div Pulm & Crit Care Med, 240 Pasteur Dr BMI Rm 1755, Stanford, CA 94304 USA
[3] Transylvania Univ, Fac Med, Brasov, Romania
[4] Wroclaw Med Univ, Dept Clin Immunol, Wroclaw, Poland
[5] All MED Med Res Inst, Wroclaw, Poland
[6] INSERM, Desbrest Inst Epidemiol & Publ Hlth, Montpellier, France
[7] Montpellier Univ, Montpellier, France
[8] Univ Zurich, Swiss Inst Allergy & Asthma Res SIAF, Davos, Switzerland
[9] Univ Naples Federico II, Cardarelli Hosp, Div Resp & Allerg Dis, Dept Chest Dis,High Specialty A, Naples, Italy
[10] Univ Naples Federico II, Med Sch Specializat Resp Dis, Naples, Italy
[11] Univ Florence, Ctr Bioclimatol, Florence, Italy
[12] Univ Augsburg, Dept Environm Med, Augsburg, Germany
[13] Munich German Res Ctr Environm Hlth, Helmholtz Ctr, Inst Environm Med, Augsburg, Germany