1. Department of Oral and Maxillofacial Surgery; Hospital Universitario Central de Asturias (HUCA); Oviedo Asturias Spain
2. Instituto Universitario de Oncología del Principado de Asturias (IUOPA); Hospital Universitario Central de Asturias; Oviedo Asturias CIBERONC ISCIII Spain
3. Department of Otolaryngology; Hospital Universitario Central de Asturias (HUCA); Oviedo Asturias Spain
4. Department of Biochemistry; Hospital Universitario Central de Asturias (HUCA); Oviedo Asturias Spain