D. S. . Nurhandayani, Y. . Vitrianingsih, and F. . Issalillah, “Legal Aspects of Private Vaccine Distribution and Cross-Subsidy in the National Health System”, Journal of Social Science Studies, vol. 4, no. 1, pp. 291–302, Jan. 2024, Accessed: Jan. 27, 2026. [Online]. Available: https://jos3journals.id/index.php/jos3/article/view/316