[1] Univ Cincinnati, Med Ctr, Cincinnati, OH 45267 USA
[2] Maastricht Univ, Dept Ild, Hosp Gelderse Vallei Ede, Maastricht, Netherlands
[3] Cleveland Clin, Resp Inst, Cleveland, OH 44106 USA
[4] St Antonius Hosp Nieuwegein, Ctr Interstitial Lung Dis, Dept Pulmonol, Nieuwegein, Netherlands
[5] Kyoto Univ Hosp, Dept Rehabil Med & Resp Med, Kyoto, Japan
[6] Univ Paris 11, INSERM, Hop Bicetre, AP HP,U999,Serv Pneumol, Le Kremlin Bicetre, France
[7] Albany Med Ctr, Div Pulm & Crit Care Med, Albany, NY USA
[8] Bellvitge Univ Hosp, Dept Internal Med, IDI BELL, Barcelona, Spain
[9] Hosp Serv Publ Estadual Sao Paulo, Dept Doencas Aparelho Resp, Sao Paulo, Brazil
[10] Univ Hosp, Dept Pneumol, Freiburg, Germany
[11] Beth Israel Deaconess Med Ctr, Albert Einstein Coll Med, New York, NY 10003 USA
[12] Hosp Avicenne, Dept Pneumol, Bobigny, France
[13] Clin Ctr Serbia, Clin Pulmonol, Belgrade, Serbia
[14] Royal Brompton Hosp, London SW3 6LY, England