Araç, S., Karahan, M.Z., Özel, M., Yiğit, R., Akkoç, H. and Araç, E. 2021. Effects of treatment with hydroxychloroquine and azithromycin on the index of cardiac electrophysiological balance in patients with COVID-19: A retrospective cohort study. Journal of Surgery and Medicine. 5, 5 (May 2021), 412–416. DOI:https://doi.org/10.28982/josam.843042.