Age- and Sex-differences in the Validity of Questionnaire-based Zygosity in Twins

Author： Christiansen Lene Frederiksen Henrik Schousboe Karoline Skytthe Axel von Wurmb-Schwark Nicole Christensen Kaare Kyvik Kirsten

Publisher： Australian Academic Press

ISSN： 1369-0523

Source： Twin Research, Vol.6, Iss.4, 2003-08, pp. : 275-278

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