Vo, T. N. A., N. T. Nguyen, and T. T. H. Vu. “Impact of Frailty on the Outcomes of Isolated Coronary Artery Bypass Grafting Surgery”. The Vietnam Journal of Cardiovascular and Thoracic Surgery, vol. 52, Aug. 2025, pp. 72 -81, doi:10.47972/vjcts.v52i.1493.