Gamalliel, Nico, Reynardi Larope Sutanto, Mochammad Izzatullah, and Gita Fajri Gustya. “Effectiveness of Various Health Insurances in Tackling Health Problems of the 21st Century: A Systematic Review”. Journal of Asian Medical Students’ Association 8, no. 4 (May 26, 2020): 41-47. Accessed October 21, 2020. https://j-amsa.amsa-international.org/index.php/main/article/view/166.