N. Cheng, L. Cheng, R. Wang, L. Zhang, and C. Gao, “The Improvement of Torsion Assessed by Cardiovascular Magnetic Resonance Feature Tracking after Coronary Artery Bypass Grafting: A Sensitive Index of Cardiac Function”, HSF, vol. 20, no. 1, pp. E026-E031, Feb. 2017.