M. Arfah, A. N. Azizah, S. Sukmawati, and M. Ikram, “Effectiveness of the National Health Insurance (JKN) Policy in Improving Access and Quality of Health Services: A Literature Study”, JPKBK, vol. 1, no. 2, pp. 8–13, Mar. 2026, doi: 10.65943/p7m4s949.