title: Placebo-controlled feasibility randomized trial?
authors.affiliation: Medical Oncology Section, Hospital Universitario del Río Hortega, Valladolid, Spain. Electronic address: asrubiales@gmail.com.
authors.forename: Álvaro
authors.initials: Á
authors.lastname: Sanz Rubiales
authors.affiliation: Radiotherapy Service, Hospital Clínico Universitario de Valladolid, Valladolid, Spain.
authors.forename: María Luisa
authors.initials: ML
authors.lastname: del Valle
mesh_terms: D000701:Analgesics, Opioid / Q000008:administration & dosage*; D004417:Dyspnea / Q000188:drug therapy* / Q000209:etiology*; D015444:Exercise; D005283:Fentanyl / Q000008:administration & dosage*; D006801:Humans; D016138:Walking / Q000502:physiology*
chemical_list: D000701:Analgesics, Opioid; D005283:Fentanyl