[1] Complexo Hosp Univ A Coruna CHUAC, Otorhinolaryngol Head & Neck Surg Dept, Galicia, Spain
[2] Univ Santiago de Compostela USC, Clin Res Med, Int Ctr Doctorate & Adv Studies CIEDUS, Galicia, Spain
[3] Parc Taul Hosp Univ, Oral & Maxillofacial Surg Dept, Barcelona, Spain