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An investigation of a measure of twins' equal environments.
Mitchell KS, Mazzeo SE, Bulik CM, Aggen SH, Kendler KS, Neale MC. Mitchell KS, et al. Twin Res Hum Genet. 2007 Dec;10(6):840-7. doi: 10.1375/twin.10.6.840. Twin Res Hum Genet. 2007. PMID: 18179396 Free PMC article.