Reply to Kety et al.
D000300:Adoption; D000328:Adult; D002648:Child; D004200:Diseases in Twins; D006801:Humans; D012107:Research Design; D012559:Schizophrenia / Q000235:genetics*; D012561:Schizophrenia, Childhood / Q000235:genetics; D012569:Schizotypal Personality Disorder / Q000235:genetics; D012931:Social Environment