[1] Cleveland Clin, Resp Inst, Cleveland, OH 44106 USA
[2] Nippon Med Sch, Dept Allergy & Rheumatol, Grad Sch Med, Tokyo, Japan
[3] Nippon Med Sch, Grad Sch Med, Dept Pulm Med & Oncol, Tokyo, Japan
[4] Univ Colorado, Sch Med, Denver, CO USA
[5] Imperial Coll London, Natl Heart & Lung Inst, London, England
[6] Royal Brompton Hosp, Res Clin Res Facil, Natl Inst Hlth, London, England
[7] Univ Texas Houston, McGovern Med Sch, Div Rheumatol & Clin Immunogenet, Houston, TX USA
[8] Univ Washington, Seattle, WA 98195 USA
[9] Boehringer Ingelheim France SAS, Reims, France
[10] Boehringer Ingelheim Pharmaceut Inc, Ridgefield, CT USA
[11] Boehringer Ingelheim Int GmbH, Ingelheim, Germany
[12] Univ Hosp Zurich, Dept Rheumatol, Zurich, Switzerland