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BJOG: An International Journal of Obstetrics & Gynaecology > 121 > 9 > 1108 - 1116
Prenatal Diagnosis > 30 > 6 > 565 - 570
BJOG: An International Journal of Obstetrics & Gynaecology > 121 > 9 > 1108 - 1116
Prenatal Diagnosis > 30 > 6 > 565 - 570