[1] Fachkrankenhaus Coswig, Dept Resp Med, Coswig, Germany
[2] Univ Michigan, Div Pulm & Crit Care Med, Ann Arbor, MI 48109 USA
[3] Royal Brompton & Harefield NHS Fdn Trust, Natl Inst Hlth Res Resp Biomed Res Unit, London, England
[4] Imperial Coll, Natl Heart & Lung Inst, London, England
[5] Claude Bernard Lyon 1 Univ, Louis Pradel Hosp, Natl Reference Ctr Rare Pulm Dis, Dept Resp Dis, Lyon, France
[6] Royal Brompton & Harefield NHS Fdn Trust, Dept Radiol, London, England
[7] Natl Hosp Org, Kinki Chuo Chest Med Ctr, Clin Res Ctr, Sakai, Osaka, Japan
[8] Univ Cattolica Sacro Cuore, Fdn Policlin A Gemelli Irccs, Rome, Italy
[9] Imperial Coll, Natl Heart & Lung Inst, London, England
[10] Boehringer Ingelheim Int GmbH, Ingelheim, Germany
[11] Scs Boehringer Ingelheim Comm V, Brussels, Belgium
[12] Boehringer Ingelheim Pharma GmbH & Co KG, Biberach, Germany
[13] Boehringer Ingelheim Pharmaceut Inc, 90 E Ridge POB 368, Ridgefield, CT 06877 USA
[14] Natl Jewish Hlth, Dept Med, Denver, CO USA