[1] Gen Hosp Thessaloniki G Papanikolaou, Pulmonol Dept, Thessaloniki, Greece
[2] Univ Manchester, Sch Biol Sci, Div Immunol Immun Infect & Resp Med, Manchester, Lancs, England
[3] Univ Manchester, Manchester Univ NHS Fdn Trust, Manchester Acad Hlth Sci Ctr,Div Immunol Immun In, Wythenshawe Hosp,Sch Biol Sci,North West Lung Ctr, Manchester, Lancs, England
[4] Univ Ioannina, Sch Med, Resp Med Dept, Ioannina, Greece