[1] Univ Hosp, Pulm Dept, Hradec Kralove, Czech Republic
[2] Thomayer Hosp, Dept Resp Med, Prague, Czech Republic
[3] Chest Clin, Out Patient Off, Karlovy Vary, Czech Republic
[4] Chest Clin, Out Patient Off, Ostrava, Czech Republic
[5] Palacky Univ, Fac Med & Dent, Dept Resp Med & TB, Olomouc, Czech Republic
[6] Palacky Univ, Fac Phys Culture, Dept Physiotherapy, Olomouc, Czech Republic
[7] Palacky Univ, Fac Phys Culture, Dept Nat Sci Kinanthropol, Olomouc, Czech Republic
[8] Univ Oxford, Ludwig Inst Canc Res, Nuffield Dept Clin Med, Oxford, England
[9] Masaryk Univ, Inst Biostat Anal, Brno, Czech Republic