Normal IQ distributions of early-treated phenylketonuric children and their unaffected siblings: failure to replicate a trimodal response or negative skew.
D002648:Child; D004035:Diet Therapy; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D010661:Phenylketonurias / Q000235:genetics / Q000628:therapy; D013223:Statistics as Topic; D013997:Time Factors