[1] Ludwig Maximilians Univ Munchen, Hauner Childrens Hosp, German Ctr Lung Res DZL, Munich, Germany
[2] Univ Colorado Denver, Sect Pediat Pulm & Sleep Med, Dept Pediat, Denver, CO USA
[3] Childrens Hosp Colorado, Aurora, CO USA
[4] Childrens Hosp Philadelphia, Div Pulm & Sleep Med, Philadelphia, PA USA
[5] Childrens Hosp Los Angeles, Los Angeles, CA USA
[6] Univ Southern Calif, Keck Sch Med, Los Angeles, CA USA
[7] Univ Edinburgh, Ctr Inflammat Res, Edinburgh, Midlothian, Scotland
[8] Hannover Med Sch, Clin Pediat Pulmonol Allergol & Neonatol, Hannover, Germany
[9] Univ Michigan, Div Pulm & Crit Care Med, Ann Arbor, MI 48109 USA
[10] Natl Jewish Hlth, Dept Med, Denver, CO USA
[11] Boehringer Ingelheim Pharma GmbH Co KG, Ingelheim, Germany
[12] Boehringer Ingelheim Pharma GmbH Co KG, Biberach, Germany
[13] Boehringer Ingelheim Schweiz GmbH, Basel, Switzerland
[14] Boehringer Ingelheim Int GmbH, Ingelheim, Germany