Pishgahi, Mehdi, Mahmoud Yousefifard, Saeed Safari, and Fatemeh Ghorbanpouryami. “Electrocardiographic Findings of COVID-19 Patients and Their Correlation With Outcome; A Prospective Cohort Study”. Frontiers in Emergency Medicine 5, no. 2 (June 11, 2020): e17. Accessed April 19, 2021. https://fem.tums.ac.ir/index.php/fem/article/view/470.