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Ultrasound in Obstetrics & Gynecology > 61 > 5 > 552 - 558
Ultrasound in Obstetrics & Gynecology > 57 > 1 > 134 - 140
Archives of Gynecology and Obstetrics > 2019 > 299 > 4 > 953-960
American Journal of Obstetrics and Gynecology > 2015 > 213 > 4 > 580.e1-580.e5