Bhowmik, Dilip K., Rezwana Mirza, and Amzad Hossain. 2014. “Primary Umbilical Endometriosis: Report of a Rare Case”. Chattagram Maa-O-Shishu Hospital Medical College Journal 13 (1):67-69. https://doi.org/10.3329/cmoshmcj.v13i1.19426.