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Reproductive BioMedicine Online > 2007 > 14 > 5 > 620-625
American Journal of Obstetrics and Gynecology > 1997 > 176 > 3 > 593-597
Reproductive BioMedicine Online > 2007 > 14 > 5 > 620-625
American Journal of Obstetrics and Gynecology > 1997 > 176 > 3 > 593-597