BJOG: An International Journal of Obstetrics & Gynaecology
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 53 - 61
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 94 - 98
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 47 - 52
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 20 - 25
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 109 - 113
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 99 - 108
BJOG: An International Journal of Obstetrics & Gynaecology > 117 > 1 > 69 - 75