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Elsevier‎(1997)‎

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By Spaans W.A.   Sluijs M.B.   van Roosmalen J.   Bleker O.P.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

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Elsevier‎(2002)‎

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By Spaans W.A.   van der Vliet L.M.E.   Roell-Schorer E.A.M.   Bleker O.P.   van Roosmalen J.   in European Journal of Obstetrics and Gynecology and Reproductive Biology

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Elsevier‎(2003)‎

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