Ufaque Muzaffar, and Ambreen Qureshi. “Abnormal Uterine Bleeding in Adolescents and Its Correlation With Ultrasonography Documented Endometrial Thickness and Uterine Volume”. International Journal of Health and Clinical Research, vol. 4, no. 9, May 2021, pp. 72-73, https://ijhcr.com/index.php/ijhcr/article/view/1499.