Angioplasty or surgery for multivessel coronary artery disease: comparison of eligible registry and randomized patients in the EAST trial and influence of treatment selection on outcomes: Emory Angioplasty versus Surgery Trial Inves- tigators. Am J Cardiol. 1997;79:1453 9. 305. Chakravarty T, Buch MH, Naik H, et al. Predictive accuracy of SYNTAX score for predicting long-term outcomes of unprotected left main coronary artery revascularization. Am J Cardiol. 2011;107: 360 6. 306. Grover FL, Shroyer AL, Hammermeister K, et al. A decade s expe- rience with quality improvement in cardiac surgery using the Veterans Affairs and Society of Thoracic Surgeons national databases. Ann Surg. 2001;234:464 72. 307. Kim YH, Park DW, Kim WJ, et al. Validation of SYNTAX (Synergy between PCI with TAXUS and Cardiac Surgery) score for prediction of outcomes after unprotected left main coronary revascularization. J Am Coll Cardiol Intv. 2010;3:612 23. 308. Shahian DM, O Brien SM, Filardo G, et al. The Society of Thoracic Surgeons 2008 cardiac surgery risk models: part 1 coronary artery bypass grafting surgery. Ann Thorac Surg. 2009;88 1 Suppl:S2 22. 309. Shahian DM, O Brien SM, Normand SL, et al. Association of hospital coronary artery bypass volume with processes of care, mortality, mor- bidity, and the Society of Thoracic Surgeons composite quality score. J Thorac Cardiovasc Surg. 2010;139:273 82. 310. Welke KF, Peterson ED, Vaughan-Sarrazin MS, et al. Comparison of cardiac surgery volumes and mortality rates between the Society of Thoracic Surgeons and Medicare databases from 1993 through 2001. Ann Thorac Surg. 2007;84:1538 46. 311. Buszman PE, Kiesz SR, Bochenek A, et al. Acute and late outcomes of unprotected left main stenting in comparison with surgical revascular- ization. J Am Coll Cardiol. 2008;51:538 45. 312. Caracciolo EA, Davis KB, Sopko G, et al. 