[1] Univ Hosp Patras, Dept Resp Med, Patras, Greece
[2] SOTIRIA, Hosp Thorac Dis, Dept Pneumonol 5, Athens, Greece
[3] SOTIRIA, Hosp Thorac Dis, Dept Pathol, Athens, Greece
[4] Natl & Kapodistrian Univ Athens, Sch Med, Hosp Thorac Dis, Acad Dept Pneumonol 1, Athens, Greece
[5] Natl & Kapodistrian Univ Athens, ATTIKON Univ Hosp, Athens Med Sch, Pulm Med Dept 2, Athens, Greece