Izhar, K., K. Ahmed, M. Rehan, M. Umar, N. Ikram, and N. Akhter. “Extensively Drug-Resistant Salmonella Typhi XDR Infection at Rawalpindi Medical University and Allied Hospitals”. Journal of Rawalpindi Medical College, Vol. 24, no. 4, Dec. 2020, pp. 406-11, doi:10.37939/jrmc.v24i4.1493.