Yasin, Muhammad, Nasir Mahmood, Syed Ahmed Saeed Naqvi, Hamid Nisar Khan, Amir Suleman, Halima Sadia, and Faheem Jan. 2020. “Risk Factors for Multidrug Resistant Tuberculosis Among Patients With Pulmonary Tuberculosis at Tertiary Care Hospital”. Pakistan Journal of Chest Medicine 25 (4):151-55. https://pjcm.net/index.php/pjcm/article/view/644.