Competing Interests: Conflict of Interest Statement Dr Gillinov serves as a consultant to Edwards Lifesciences, Medtronic, Abbott, ClearFlow, Artivion, AtriCure, and Johnson and Johnson. Dr Burns serves as a consultant to Edwards Lifesciences and Medtronic. Dr Roselli serves as a consultant to Artivion, Cook, Medtronic, Terumo Aortic, and W.L. Gore. All other authors reported no conflicts of interest. The Journal policy requires editors and reviewers to disclose conflicts of interest and to decline handling manuscripts for which they may have a conflict of interest. The editors and reviewers of this article have no conflicts of interest.