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Ultrasound in Obstetrics & Gynecology > 60 > 6 > 759 - 765
BJOG: An International Journal of Obstetrics & Gynaecology > 126 > 10 > 1243 - 1250
Ultrasound in Obstetrics & Gynecology > 60 > 6 > 759 - 765
BJOG: An International Journal of Obstetrics & Gynaecology > 126 > 10 > 1243 - 1250