N. A. Begum, L. C. H. C., and R. S. Pukale, “Evaluation of endometrial thickness with transvaginal ultrasonography in perimenopausal women presenting with abnormal uterine bleeding and correlation with its histopathological findings”, Int J Reprod Contracept Obstet Gynecol, vol. 8, no. 11, pp. 4496–4502, Oct. 2019.