Gupta, Bhavini, Sanjay Pasoria, and Madan Manmohan. “Assessment of Tubal Patency through Sono-Hysterosalpingography Using B-Mode and Colour Doppler: A Comparative Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 10, no. 2 (January 28, 2021): 683–690. Accessed December 4, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/9622.