Nimra, M., H. Irshad, M. Hasnain, and S. Ishaque. “The Correlation and Determinants of Cost-Benefit Analysis of Measles Vaccines Among the Medical Centers Providing Expanded Program on Immunization (EPI)”. Journal of Shifa Tameer-E-Millat University, Vol. 4, no. 2, Dec. 2021, pp. 110-6, doi:10.32593/jstmu/Vol4.Iss2.167.