Dr Khan is a consultant for Abbott, Edwards Lifesciences, and Medtronic; has equity in Transmural Systems; and has received institutional educational grant support from Abbott, Boston Scientific, Edwards Lifesciences, Medtronic, and Philips. Dr Cohen has received research grant support from National Institutes of Health/National Heart Lung and Blood Institute, Edwards Lifesciences, Abbott, Boston Scientific, and Philips; and consulting income from Edwards Lifesciences, Abbott, and Boston