Das, Rubby, Nilam Subedi, and Gahana Gurung. “Chorioangioma of Placenta”. Journal of Nepal Medical Association 56, no. 208 (December 31, 2017): 472-4. Accessed August 22, 2019. http://www.jnma.com.np/jnma/index.php/jnma/article/view/3315.