Qadir, Ehsan, Qudratullah Malik, Muhammad Zahid, Ali Raza, Sajid Ali Shah, and Syed Saddam Hussain. “COMPARING HEPATITIS B SEROPROTECTION IN PAKISTANI CHILDREN AT 5 AND 6 YEARS OF AGE AFTER EXPANDED PROGRAMME ON IMMUNIZATION (EPI) VACCINATION”. Pakistan Armed Forces Medical Journal 70, no. 5 (October 30, 2020): 1349–53. Accessed April 20, 2024. https://pafmj.org/PAFMJ/article/view/5562.