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ISSN:0036-5513|58|7|555-560

Informa Healthcare‎(1998)‎

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By den Ouden M.   Ubachs J.M.H.   Stoot J.E.G.M.   van Wersch J.W.J.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

ISSN:0301-2115|72|1|73-77

Elsevier‎(1997)‎

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