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European Journal of Obstetrics & Gynecology and Reproductive Biology > 2016 > 203 > C > 156-161
Seminars in Perinatology > 2014 > 38 > 4 > 194-200
American Journal of Obstetrics and Gynecology > 2006 > 195 > 3 > 657-672
American Journal of Obstetrics and Gynecology > 2004 > 191 > 3 > 911-916
American Journal of Obstetrics and Gynecology > 1998 > 178 > 4 > 688-695