[1] Univ Exeter, Med Sch, Coll Med & Hlth, Exeter, Devon, England
[2] Brigham & Womens Hosp, Pulm Div, 75 Francis St, Boston, MA 02115 USA
[3] Temple Univ, Lewis Katz Sch Med, Dept Thorac Med & Surg, Philadelphia, PA 19122 USA
[4] Flinders Univ S Australia, Coll Med & Publ Hlth, Adelaide, SA, Australia
[5] Univ Republ Hosp Maciel, Fac Med, Catedra Neumol, Montevideo, Uruguay
[6] Chest Res Fdn, Pune, Maharashtra, India
[7] Philipps Univ Marburg, Univ Med Ctr Giessen, Dept Med Pulm & Crit Care Med, Marburg, Germany
[8] Philipps Univ Marburg, DZL, German Ctr Lung Res, Marburg, Germany
[9] Guangzhou Med Univ, Affiliated Hosp 1, State Key Lab Resp Dis, Guangzhou Inst Resp Dis, Guangzhou, Guangdong, Peoples R China
[10] Guangzhou Med Univ, Affiliated Hosp 1, Natl Clin Res Ctr Resp Dis, Guangzhou, Guangdong, Peoples R China
[11] Univ Liverpool Liverpool Sch Trop Med, Liverpool, Merseyside, England
[12] Univ Cent Venezuela, Hosp Univ Caracas, Caracas, Venezuela
[13] NI Pirogov Russian State Natl Res Med Univ, Dept Pulmonol, Healthcare Minist Russia, Moscow N, Russia
[14] Obafemi Awolowo Univ, Dept Med, Ife, Nigeria
[15] Global Initiat Chron Obstruct Lung Dis, Fontana, WI USA
[16] Univ Barcelona, Hosp Clin, Ctr Invest Biomed Red Enfermedades Resp, Inst Resp,Inst Invest Biomed August Pi & Sunyer, Barcelona, Spain