By Ludwig M   Bauer O   Lopens A   Jelkmann W   Diedrich K   in Human Reproduction

ISSN:1460-2350|13|1|30-32

Oxford University Press‎(1998)‎

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By Kolben M.   Lopens A.   Blaser J.   Ulm K.   Schmitt M.   Schneider K.T.M.   Tschesche H.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|68|1|59-65

Elsevier‎(1996)‎

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