Sachdeva PK, Dahiya A, Singh R. Incidence of pelvic inflammatory disease in backache in females. Int J Reprod Contracept Obstet Gynecol [Internet]. 2016 Dec. 15 [cited 2025 Dec. 4];5(10):3322-5. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/403