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American Journal of Obstetrics and Gynecology > 2017 > 217 > 6 > 693.e1-693.e16
American Journal of Obstetrics and Gynecology > 2017 > 217 > 5 > 592.e1-592.e17
American Journal of Obstetrics and Gynecology > 2017 > 217 > 6 > 693.e1-693.e16
American Journal of Obstetrics and Gynecology > 2017 > 217 > 5 > 592.e1-592.e17