Batool, F., S. Siddiqui, M. F. . Qureshi, and I. . Ahmed. “Risk Factors and Clinical Outcome in XDR TB Patients in Public Sector Karachi”. Pakistan Journal of Chest Medicine, vol. 31, no. 3, Sept. 2025, pp. 265-70, https://www.pjcm.net/index.php/pjcm/article/view/950.