Askari, M. Hasan, and Krishnendu Gupta. “An Overview of the Universal Immunization Programme in India: A Multi-Level Discussion”. International Journal Of Community Medicine And Public Health 13, no. 9 (August 31, 2026): 5244–5251. Accessed September 1, 2026. https://www.ijcmph.com/index.php/ijcmph/article/view/16293.