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Jensen FE, Baram TZ.Jensen FE, et al.Ment Retard Dev Disabil Res Rev. 2000;6(4):253-7. doi: 10.1002/1098-2779(2000)6:4<253::AID-MRDD4>3.0.CO;2-P.Ment Retard Dev Disabil Res Rev. 2000.PMID: 11107190Free PMC article.Review.