By Geraghty Sheela R.   Khoury Jane C.   Kalkwarf Heidi J.   in Twin Research

ISSN:1369-0523|7|6|542-547

Australian Academic Press‎(2004)‎

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By Thomas Stephen R.   Kalkwarf Heidi J.   Buckley Donna D.   Heubi James E.   in Journal of Clinical Densitometry

ISSN:1094-6950|8|4|415-422

Humana Press, Inc‎(2005)‎

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