P-216 Impact of delay in treatment initiation in Overall Survival in Head and Neck Cancer. (July 2021) - Amarillo, Dahiana; Herrera, Gabriel; Lara, Gisela; Muñóz, Eugenia; Sanchez, Silvana; Sommer, Patricia; Sosa, Sofía; Alvarez, Diego; Borche, German; Munyo, Andrés; Lorenzo, Federico; Albora, Ricardo D.; et al.