Kumar, A., S. Srivastava, S. Soni, and F. Tiwari. “High Risk Pregnancy Scoring System to Evaluate Maternal and Fetal Outcome”. International Journal of Health and Clinical Research, vol. 4, no. 8, Apr. 2021, pp. 91-95, https://ijhcr.com/index.php/ijhcr/article/view/1419.