[1] Univ Modena & Reggio Emilia, Dept SMECHIMAI, Modena, Italy
[2] Univ Hosp Modena, Resp Dis Unit, Modena, Italy
[3] Univ Modena & Reggio Emilia, Clin & Expt Med PhD Program, Modena, Italy
[4] Osped San Liberatore, UOC Med, Atri, Italy
[5] Osped Bufalini, Unita Terapia Semiintens, UOC Med Interna, Cesena, Italy
[6] Osped SS Annunziata, Anestesia Rianimaz & Terapia Antalg, Taranto, Italy
[7] Santo Spiritos Hosp, Resp Med, Pescara, Italy
[8] Osped Bolzano, Unita Pneumol, Bolzano, Italy
[9] Osped San Bortolo, UOC Anestesia & Rianimaz, Vicenza, Italy
[10] Osped San Donato, Anestesia & Rianimaz, Arezzo, Italy
[11] Osped Santa Maria Bianca, Unita Pneumol, Mirandola, Italy
[12] Univ Hosp Modena, Modena, Italy
[13] Univ Hosp St Orsola Malpighi, Resp Dis & RICU, Bologna, Italy