Ambike, Deepali, Viraj Tambade, Faisal Poker, and Kaenat Ahmed. “Parental Knowledge on the Optional Vaccines and the Barriers in Their Use: A Rural Hospital-Based Study”. Indian Journal of Child Health 4, no. 1 (November 30, 2016): 88–90. Accessed April 26, 2026. https://mansapublishers.com/ijch/article/view/181.