By Pope C. S.   Boley T. J.   in Journal of Maternal-Fetal Medicine

ISSN:1057-0802|10|1|64-67

Informa Healthcare‎(2001)‎

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By Pope C.S.   Cook E.K.D.   Arny M.   Novak A.   Grow D.R.   in Fertility and Sterility

ISSN:0015-0282|81|1|51-58

Elsevier‎(2004)‎

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