[1] Inst Invest Biomed Agusti Pi & Sunyer IDIBAPS, Pulm Med, Hosp Clin, Barcelona, Spain
[2] Univ Barcelona, Barcelona, Spain
[3] Biomed Res Networking Ctr Resp Med CIBERES, Pulm Med, Barcelona, Spain
[4] Univ Regensburg, Inst Funct Genom, Stat Bioinformat Dept, Regensburg, Germany
[5] Univ Nacl Cordoba, Inst Invest Med Mercedes & Martin Ferreyra, IMIC, CONICET, Cordoba, Argentina