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American Journal of Obstetrics and Gynecology > 2016 > 215 > 2 > 238.e1-238.e20
Taiwanese Journal of Obstetrics & Gynecology > 2006 > 45 > 3 > 189-200
American Journal of Obstetrics and Gynecology > 2016 > 215 > 2 > 238.e1-238.e20
Taiwanese Journal of Obstetrics & Gynecology > 2006 > 45 > 3 > 189-200