[1] Hosp Univ Bellvitge, Otorhinolaryngol Dept, Carrer Feixa Llarga S-N, Barcelona 08907, Spain
[2] Univ Barcelona, Clin Sci Dept, Carrer Casanova 143, Barcelona 08036, Spain
[3] Hosp Univ Bellvitge, Intens Care Unit, Carrer Feixa Llarga S-N, Barcelona 08907, Spain
[4] Bellvitge Inst Res, IDIBELL, Gran Via Hospitalet 199, Barcelona 08908, Spain