BJOG: An International Journal of Obstetrics & Gynaecology
BJOG: An International Journal of Obstetrics & Gynaecology > 127 > 1 > 116 - 122
BJOG: An International Journal of Obstetrics & Gynaecology > 127 > 1 > 70 - 78
BJOG: An International Journal of Obstetrics & Gynaecology > 127 > 1 > 79 - 86
BJOG: An International Journal of Obstetrics & Gynaecology > 127 > 1 > 99 - 105