Agrawal, Satish Chandra, and Anita Kumari. “Immunization Status of Children and Its Decline With Age: A Hospital Based Study of 1000 Children at a Teaching Hospital in Western Uttar Pradesh”. Indian Journal of Community Health 26, no. 1 (March 31, 2014): 50–55. Accessed March 29, 2024. http://www.iapsmupuk.org/journal/index.php/IJCH/article/view/373.