title: Twenty-one psychiatric cases and their MZ cotwins. A thirty years' follow-up.
mesh_terms: D000328:Adult; D000368:Aged; D004200:Diseases in Twins; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000235:genetics; D012559:Schizophrenia / Q000235:genetics*