المؤلفون: Vlachodimitropoulou-Koumoutsea, E., Gosh, S., Manmatharajah, B., Ray, A., Igwe-Omoke, N., Yoong, W.

المصدر: Journal of Obstetrics and Gynaecology ; volume 33, issue 5, page 455-458 ; ISSN 0144-3615 1364-6893

الاتاحة: https://doi.org/10.3109/01443615.2013.767788
http://www.tandfonline.com/doi/pdf/10.3109/01443615.2013.767788