title: The group psychotherapy literature: 1981.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005196:Family Therapy / Q000379:methods; D006801:Humans; D001523:Mental Disorders / Q000628:therapy*; D010043:Outcome and Process Assessment, Health Care; D011575:Psychoanalytic Therapy; D011615:Psychotherapy, Group / Q000379:methods*; D012106:Research