title: Time, space, and motion: the unanswered challenges in measuring quality of life.
authors.affiliation: Institute for Clinical Evaluative Sciences, Toronto, Ontario.
authors.forename: J I
authors.initials: JI
authors.lastname: Williams
mesh_terms: D006304:Health Status; D006801:Humans; D009038:Motion; D009730:Nursing Assessment / Q000379:methods*; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D013995:Time