[1] Univ Basque Country, Euskal Herriko Unibertsitatea, UPV EHU,Fac Med & Enfermeria, Pneumol Serv,Hosp Univ Cruces,Dept Immunol Microb, Baracaldo, Bizkaia, Spain
[2] Biocruces Bizkaia Hlth Res Inst, Bioinformat & Stat Unit, Baracaldo, Bizkaia, Spain
[3] Hosp Univ Galdakao Usansolo, Pneumol Serv, Galdakao, Bizkaia, Spain
[4] Univ Barcelona, Pneumol Serv, Hosp Clin, Inst Invest Biomed August Pi i Sunyer, Barcelona, Spain
[5] Hosp Univ Cruces, Pneumol Serv, Baracaldo, Bizkaia, Spain