Affiliation: | 1. Worldwide Epidemiology, GlaxoSmithKline R&D, Uxbridge, England;2. Thorax Institute, Hospital Clinic, IDIBAPS, Universitat de Barcelona and FISIB, CIBER Enfermedades Respiratorias (CIBERES), Mallorca, Spain;3. Weill Cornell Medical College, New York, NY;4. Lovelace Clinic Foundation, Albuquerque, NM |