P. Sinha, U. Gupta, B. Waris, and A. Dubey, “Evaluation of abnormal uterine bleeding by transvaginal sonography, sonohysterography and correlation with endometrial histopathology”, Int J Reprod Contracept Obstet Gynecol, vol. 4, no. 5, pp. 1374–1379, Feb. 2017.