Nath, Sarmila, Sanchari Dutta, and Gourisankar Kamilya. 2021. “Sildenafil Citrate Therapy in Intrauterine Growth Restriction With Oligohydramnios”. International Journal of Health and Clinical Research 4 (4):123-26. https://www.ijhcr.com/index.php/ijhcr/article/view/749.