Dali, B., S. Acharya, S. C. Jha, M. Basnet, N. Pradhan, J. Sharma, K. D. Bista, B. Manandhar, and A. Rana. “How Safe Is Progesterone? Acute Pulmonary Embolisms (APE) Alleged to Progesterone”. Nepal Journal of Obstetrics and Gynaecology, vol. 6, no. 1, Aug. 2011, pp. 66-67, https://www.nepjol.info/index.php/NJOG/article/view/5257.