Rawat, R., Seth, S., Rawat, R., Garg, R., Shukla, S. and Vishwakarma, S. 2017. Chronic pelvic pain in women: comparative study between ultrasonography and laparoscopy as diagnostic tool. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 3, 4 (Feb. 2017), 998–1001.