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Ultrasound in Obstetrics & Gynecology > 60 > 5 > 673 - 680
BJOG: An International Journal of Obstetrics & Gynaecology > 129 > 8 > 1352 - 1360
Ultrasound in Obstetrics & Gynecology > 60 > 5 > 673 - 680
BJOG: An International Journal of Obstetrics & Gynaecology > 129 > 8 > 1352 - 1360