Nadim, A. A., Ghanem, R. M., Benyamine, M. G., Abdallah, F. N., & Abbas, A. M. (2019). The effect of caffeine ingestion in prevention of post-operative ileus after caesarean section: a randomized controlled trial. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 8(12), 4808–4814. https://doi.org/10.18203/2320-1770.ijrcog20195325