title: The effect of a protriptyline-perphenazine combination in chronic psychiatric patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000639:Amitriptyline / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D003863:Depression / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D010546:Perphenazine / Q000627:therapeutic use*; D012559:Schizophrenia / Q000188:drug therapy*
chemical_list: D000639:Amitriptyline; D010546:Perphenazine