Saleem, M., I. Haider, F. Ajmal, and A. Khan. “Audit & Evaluation of the Acute Flaccid Paralysis Surveillance System in Khyber Pakhtunkhwa, Pakistan”. KHYBER MEDICAL UNIVERSITY JOURNAL, vol. 8, no. 1, Apr. 2016, https://www.kmuj.kmu.edu.pk/article/view/14602.