E. Qadir, Q. Malik, M. Zahid, A. Raza, S. A. Shah, and S. S. Hussain, “COMPARING HEPATITIS B SEROPROTECTION IN PAKISTANI CHILDREN AT 5 AND 6 YEARS OF AGE AFTER EXPANDED PROGRAMME ON IMMUNIZATION (EPI) VACCINATION”, Pak Armed Forces Med J, vol. 70, no. 5, pp. 1349–53, Oct. 2020, Accessed: Jul. 15, 2024. [Online]. Available: https://pafmj.org/PAFMJ/article/view/5562