M. S. Amin, I. Thaver, and M. Imran, “Factors Affecting Uptake of Routine Immunization Among Children Age 12-23 Months in District Rahimyar Khan, Punjab, Pakistan”, Int J Front Sci, vol. 2, no. 1, pp. 31–50, Jan. 2018, doi: 10.37978/tijfs.v2i1.32.