title: Intervention fidelity: a necessary aspect of intervention effectiveness studies.
authors: Susan L
authors: SL
authors: Murphy
authors: Sharon A
authors: SA
authors: Gutman
mesh_terms: D019983:Guideline Adherence; D006801:Humans; D009788:Occupational Therapy; D011361:Professional Competence; D015203:Reproducibility of Results; D012107:Research Design; D016896:Treatment Outcome