Shahnawaz, Mohammad, and Mohammad Ibrahim. “INCIDENCE OF THERAPEUTIC OPENING OF FALLOPIAN TUBES DURING HYSTEROSALPINGOGRAPHY”. Journal of Ayub Medical College Abbottabad, vol. 7, no. 1, Feb. 1995, pp. 6-8, https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/4755.