title: Evaluation of an amitriptyline-perphenazine combination in chronic schizophrenia.
mesh_terms: D000328:Adult; D000368:Aged; D000639:Amitriptyline / Q000008:administration & dosage*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008875:Middle Aged; D010546:Perphenazine / Q000008:administration & dosage*; D010919:Placebos; D012559:Schizophrenia / Q000188:drug therapy*
chemical_list: D010919:Placebos; D000639:Amitriptyline; D010546:Perphenazine