Leyre González-Vallejo, MD1; Javier
Blanco-Sainzdelamaza, MD2; Arrate Querejeta-Ayerra,
MD1; Carlos Chiesa-Estomba, MD, MSc,
PhD.3
1Radiotherapy Department, Donostia University
Hospital, San Sebastian, Spain; 2Medical University of
Bialystok, Bialystok, Poland; 3Department of
Otorhinolaryngology and Head and Neck Surgery, Donostia University
Hospital, San Sebastian, Spain.