1.
B. S, M. B. V. A clinical study of tramadol as an analgesic in labour. Int J Reprod Contracept Obstet Gynecol [Internet]. 2017 Dec. 25 [cited 2025 Nov. 11];7(1):312-7. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/4025