Abdullah, Salsbeel Khan, Iqra Hamid Khan, and Tahira Ashraf. “Impact of Covid -19 on Expanded Program on Immunisation in District Dir Lower Khyber Pakhtunkhwa”. Journal of the Pakistan Medical Association, vol. 74, no. 3, Feb. 2024, pp. 456-8, doi:10.47391/JPMA.8159.