Abdelshafy, A., Abdullah, K. I., Ashoush, S., & Hosni, H. E. (2019). The role of sildenafil citrate in the treatment of fetal growth restriction: a randomized controlled trial. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 8(5), 1840–1846. https://doi.org/10.18203/2320-1770.ijrcog20191929