[1] Univ Nova Lisboa, Chron Dis Res Ctr CEDOC, P-1200 Lisbon, Portugal
[2] Univ Nova Lisboa, Dept Univ Saude Publ, Fac Ciencias Med, P-1200 Lisbon, Portugal
[3] Hosp Pulido Valente, Ctr Hosp Lisboa Norte, Intervent Pulmonol Unit, Lisbon, Portugal
[4] Hosp Beatriz Angelo, Intervent Pulmonol Unit, PT-2674514 Loures, Portugal
[5] Hosp Beatriz Angelo, Imagiol Dept, PT-2674514 Loures, Portugal
[6] Heidelberg Univ, Pneumol & Crit Care Med Dept, Thoraxklin, Heidelberg, Germany