B. Shetty, Mamatha, Krupa B. M., Mounica Malyala, Asha Swarup, Davis Sabu Pathadan, and Suneha Pocha. “Preterm Birth: Associated Risk Factors and Outcome in Tertiary Care Center”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 6, no. 8 (July 26, 2017): 3271–3274. Accessed December 29, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/3156.