Kartal, H., Sicim, H., Mungan, U., Demirdaş, E., Erol, G., Ocal, A. and Koç, M. 2020. Assessment of preoperative risk scoring systems in geriatric and non-geriatric coronary bypass surgery patients. Journal of Surgery and Medicine. 4, 6 (Jun. 2020), 491–495. DOI:https://doi.org/10.28982/josam.744784.