Kesarwani P, Singh N, Keshari SS, Dixit S. Cross sectional study of immunization coverage in urban slum areas of Lucknow region. Int J Community Med Public Health [Internet]. 2017 Aug. 23 [cited 2025 Oct. 28];4(9):3310-3. Available from: https://www.ijcmph.com/index.php/ijcmph/article/view/1719