Heeralal, Fakhir Raza Haidri, Zakia Haq, Ramesh Kumar, and Syed Aftab Mehmood. 2022. “CARDIAC INVOLVEMENT IN CRITICALLY ILL COVID 19 PATIENTS: A SINGLE CENTER STUDY FROM PAKISTAN”. Infectious Diseases Journal of Pakistan 31 (4):119-24. https://ojs.idj.org.pk/index.php/Files/article/view/87.