title: Implementing PCA--the importance of information and control.
authors.forename: M R
authors.initials: MR
authors.lastname: Gabrielczyk
mesh_terms: D016058:Analgesia, Patient-Controlled / Q000523:psychology*; D006801:Humans; D007389:Internal-External Control; D010149:Postoperative Pain / Q000188:drug therapy*; D010353:Patient Education as Topic