Ashraf Butt, A. U., S. Ghazanfar, M. Sarfraz Khan, A. Rehman, J. Basit, and M. Mujeeb Khan. “Travel History Based Symptom Analysis of COVID-19 Patients”. Students’ Supplement of Journal of Rawalpindi Medical College, vol. 27, no. S-1, Aug. 2024, pp. 19-29, doi:10.37939/sjrmu.v27iS-1.189.