title: Negative and positive schizophrenic syndromes after the acute phase: a prospective follow-up.
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D003863:Depression / Q000150:complications; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012565:Schizophrenic Psychology