1.
Shaheen A, Chauhan N, Alka A, Nautiyal R. An observational study of aetiology of preterm labour in a tertiary health care centre. Int J Reprod Contracept Obstet Gynecol [Internet]. 2022 Jun. 27 [cited 2025 Dec. 4];11(7):1970-3. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/11811