By Xu J.   Cheung T.M.   Chan S.T.-h.   Ho P.C.   Yeung W.S.B.   in Fertility and Sterility

ISSN:0015-0282|74|6|1215-1219

Elsevier‎(2000)‎

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By Xu J.-s.   Cheung T.-m.   Chan S.T.-h.   Ho P.-c.   Yeung W.S.-b.   in Fertility and Sterility

ISSN:0015-0282|75|5|986-991

Elsevier‎(2001)‎

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