B. Shetty M, B. M. K, Malyala M, Swarup A, Pathadan DS, Pocha S. Preterm birth: associated risk factors and outcome in tertiary care center. Int J Reprod Contracept Obstet Gynecol [Internet]. 2017 Jul. 26 [cited 2025 Dec. 29];6(8):3271-4. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/3156