Schizophrenic spectrum disorders in the families of schizophrenic children.
D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009518:New York; D012559:Schizophrenia / Q000453:epidemiology / Q000235:genetics*; D012561:Schizophrenia, Childhood; D012924:Social Conditions