Shah, Syed Karamat Ali, Shahab ud Din, Muhammad Hafizullah, Muhammad Arabi, Inayat Ullah, and Waheed A. Sahibzada. “Changing Pattern of Infective Endocarditis”. Journal of Postgraduate Medical Institute 5, no. 1 (August 23, 2011). Accessed August 14, 2022. https://www.jpmi.org.pk/index.php/jpmi/article/view/376.