title: The nature and evaluation of cancer pain.
authors.forename: W O
authors.initials: WO
authors.lastname: Evans
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000150:complications / Q000503:physiopathology*; D010146:Pain / Q000209:etiology / Q000503:physiopathology* / Q000523:psychology; D010147:Pain Measurement