title: Patient-controlled analgesia: a review of the literature.
authors.forename: C
authors.initials: C
authors.lastname: Williams
mesh_terms: D016058:Analgesia, Patient-Controlled / Q000009:adverse effects / Q000191:economics / Q000379:methods*; D003362:Cost-Benefit Analysis; D006801:Humans; D010353:Patient Education as Topic; D016896:Treatment Outcome