Plasma Concentrations of Risperidone and its 9-Hydroxy Metabolite and their Relationship to Dose in Schizophrenic Patients: Simultaneous Determination by a High Performance Liquid Chromatography with Electrochemical Detection - Aravagiri, M; Marder, S R; Wirshing, Donna; Wirshing, W C (Pharmacopsychiatry, 1998)