title: Shadow and substance: values and knowledge.
authors.forename: R
authors.initials: R
authors.lastname: Weir
authors.forename: G B
authors.initials: GB
authors.lastname: Browne
authors.forename: J
authors.initials: J
authors.lastname: Roberts
mesh_terms: D015982:Bias; D006801:Humans; D015403:Nursing Evaluation Research / Q000379:methods / Q000592:standards*; D017063:Outcome Assessment, Health Care; D012107:Research Design