Article
PennTwins: a population-based cohort for twin studies.
Twin research and human genetics : the official journal of the International Society for Twin Studies - 1 Dec 2006
Coccaro Emil F, Jacobson Kristen C
Abstract excerpt
The current article describes the creation and composition of the PennTwins Cohort and provides details on the demographic characteristics of the sample. The PennTwins Cohort was developed using a population-based method of ascertainment and currently has 9401 28- to 47-year-old twins, including 2225 confirmed twin pairs and 4951 twins whose co-twins have not yet registered. Zygosity data have been used to...
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