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BJOG: An International Journal of Obstetrics & Gynaecology > 118 > 5 > 596 - 607
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 10 > 1262 - 1269
BJOG: An International Journal of Obstetrics & Gynaecology > 118 > 5 > 596 - 607
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 10 > 1262 - 1269