TondasA. E., MulawarmanR., TrifitrianaM., NurmainiS., and IrfannuddinI. “Arrhythmia Risk Profile and Ventricular Repolarization Indices in COVID-19 Patients: A Systematic Review and Meta-Analysis”. The Journal of Infection in Developing Countries, Vol. 15, no. 02, Mar. 2021, pp. 224-9, doi:10.3855/jidc.13922.