title: The challenge of response shift for quality-of-life-based clinical oncology research.
authors.forename: M A
authors.initials: MA
authors.lastname: Sprangers
authors.forename: C E
authors.initials: CE
authors.lastname: Schwartz
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000523:psychology* / Q000628:therapy; D011788:Quality of Life