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American Journal of Obstetrics and Gynecology > 2007 > 196 > 5 > 480.e1-480.e6
Life Sciences > 2000 > 66 > 6 > 511-520
American Journal of Obstetrics and Gynecology > 2007 > 196 > 5 > 480.e1-480.e6
Life Sciences > 2000 > 66 > 6 > 511-520