JOURNAL OF CLINICAL PSYCHIATRY, vol.66, no.1, pp.63-72, 2005 (SCI-Expanded)
Background: Several open trials and case studies have reported beneficial effects following the addition of risperidone for partial responders to clozapine. The purpose of this study was to carry out a placebo-controlled, randomized. double-blind trial of the efficacy, safety, and tolerability of adjunctive treatment with risperidone in patients with schizophrenia partially responsive to clozapine.