BJOG-An International Journal of Obstetrics and Gynaecology, 124(10), 1595. Wiley-Blackwell BJOG: An International Journal of Obstetrics and Gynaecology 124 (2017) 10 BJOG: an international journal of obstetrics and gynaecology BJOG : an International Journal of Obstetrics and Gynaecology, 124, 1595-1604 BJOG: An International Journal of Obstetrics and Gynaecology, 124(10), 1595-1604 BJOG : an International Journal of Obstetrics and Gynaecology, 124, 10, pp. 1595-1604