[1] Inst Nacl Enfermedades Resp Ismael Cosio Villegas, Mexico City, DF, Mexico
[2] Univ Nottingham Hosp, Natl Inst Hlth Res, Resp Biomed Res Ctr, City Campus, Nottingham, England
[3] Univ Michigan, Div Pulm & Crit Care Med, Ann Arbor, MI 48109 USA
[4] Claude Bernard Lyon 1 Univ, Louis Pradel Hosp, Natl Reference Ctr Rare Pulm Dis, Resp Dis Dept, Lyon, France
[5] Tokushima Univ, Grad Sch Biomed Sci, Tokushima, Japan
[6] Univ Virginia, Div Pulm & Crit Care Med, Charlottesville, VA USA
[7] MHH Hannover Med Sch, Dept Resp Med, Hannover, Germany
[8] Univ Ulsan, Coll Med, Asan Med Ctr, Pulm & Crit Care Med, Seoul, South Korea
[9] Boehringer Ingelheim Pharma GmbH & Co KG, Biberach, Germany
[10] Boehringer Ingelheim Int GmbH, Ingelheim, Germany
[11] Imperial Coll London, Natl Heart & Lung Inst, London, England
[12] Royal Brompton Hosp, Natl Inst Hlth Res, Clin Res Facil, London, England