The familial aggregation of the lesser variant in biological and nonbiological relatives of PDD probands: a family history study.

doi:10.1111/1469-7610.00644

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The familial aggregation of the lesser variant in biological and nonbiological relatives of PDD probands: a family history study.

Journal of child psychology and psychiatry, and allied disciplines - 1 Jul 2000

Szatmari P, MacLean J E, Jones M B, Bryson S E, Zwaigenbaum L, Bartolucci G, Mahoney W J, Tuff L

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OBJECTIVE: To determine the risk of the lesser variant (or PDD-like traits) in the biological and nonbiological second- and third-degree relatives of PDD probands using a screening questionnaire and to investigate the extent to which the risk of the lesser variant differs according to various characteristics of the proband. METHOD: The sample consists of a series of 34 nuclear families with 2 affected PDD...

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The familial aggregation of the lesser variant in biological and nonbiological relatives of PDD probands: a family history study.

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