[1] Univ Hosp, Clin Resp Med & Pulm Cell Res, Petersgraben 4, CH-4031 Basel, Switzerland
[2] Univ Autonoma Madrid, Inst Invest Hosp Univ Princesa IISP, Madrid, Spain
[3] Med Spectrum Twente, Med Sch Twente, Enschede, Netherlands
[4] Univ Milan, IRCCS Fdn Osped Maggiore Policlin Ca Granda, Dept Pathophysiol & Transplantat, Milan, Italy
[5] Univ Thessaly, Sch Med, Larisa, Greece
[6] Med Ctr, Dept Pneumol, Alkmaar, Netherlands
[7] Univ Belgrade, Fac Med, Belgrade, Serbia
[8] Clin Ctr Serbia, Clin Pulm Dis, Belgrade, Serbia
[9] Univ Liege, Dept Pneumol, Liege, Belgium
[10] Hosp Badalona Germans Trias & Pujol, CIBER Enfermedades Resp, Dept Microbiol, Badalona, Spain
[11] Amphia Hosp, Dept Pneumol, Breda, Netherlands
[12] Hosp Clin Barcelona, Dept Pneumol, Barcelona, Spain
[13] Maastricht Univ, Dept Resp Med, Med Ctr, Maastricht, Netherlands
[14] Med Hsch, Dept Pneumol, Hannover, Germany
[15] Univ Autonoma Chile, Santiago, Chile
[16] Univ Basel Hosp, Inst Clin Epidemiol & Biostat, Basel, Switzerland
[17] Hosp Univ Miguel Servet, Resp Dept, Zaragoza, Spain
[18] CIBER Enfermedades Resp, Madrid, Spain
[19] Valme Univ Hosp, Resp Dept, Seville, Spain
[20] Hosp Univ Mutua De Terrassa, Internal Med Unit, Barcelona, Spain
[21] Hosp Nuestra Senora Candelaria, Resp Dept, Santa Cruz De Tenerife, Spain
[22] Hosp Galdakao Usansolo, Resp Dept, Bizkaia, Spain
[23] Hosp Arnau De Vilanova Lliria, Pneumol Dept, Valencia, Spain
[24] Clin Univ Navarra, Resp Dept, Pamplona, Spain
[25] Hosp Univ Vall dHebron, Dept Pneumol, Barcelona, Spain
[26] Harvard Univ, Brigham & Womens Hosp, Pulm & Crit Care Med, Boston, MA 02115 USA