Upadhyay, Yashaswini, Reena Wani, Yasmeen Khatib, and Anumeha Chaturvedi. “Role of Ultrasonography and Endometrial Sampling in Perimenopausal Abnormal Uterine Bleeding”. International Journal of Biomedical and Advance Research 10, no. 2 (February 28, 2019): e5070. Accessed April 21, 2019. https://ssjournals.com/index.php/ijbar/article/view/5070.