Sadiq, Sidra, Maria Khan, Tayyaba Sadiq, Sheryar Orakzai, Mirza Muhammad Dawood, and Najeeb Ul Haq. “Impact of Age, Gender, Post Infection and Post Vaccination Status on Antibody Response in COVID 19 Patients”. Journal of the Pakistan Medical Association 72, no. 9 (August 15, 2022): 1805–1809. Accessed April 30, 2026. https://jpma.org.pk/index.php/public_html/article/view/5309.