ZENG, Jinjing, Wende ZHANG, and Qingming TANG. “Analysis of the Factors Influencing Enterprise and Government Participation in the Medicines Patent Pool Based on System Dynamics Model”. Iranian Journal of Public Health 47, no. 10 (October 6, 2018): 1493-1503. Accessed April 21, 2019. http://ijph.tums.ac.ir/index.php/ijph/article/view/14911.