Additional file 1: of Effects of prophylactic swallowing exercises on dysphagia and quality of life in patients with head and neck cancer receiving (chemo) radiotherapy: the Redyor study, a protocol for a randomized clinical trial Guillen-SolaAnna SolerNeus MarcoEster Pera-CegarraOscar ForoPalmira 2019 Informed Consent for Redyor Study. (PDF 90 kb)