Sources of Funding
BLOOD, HEART, LUNG
This work was supported by the National Institutes of Health grants U01HL089709, U01HL089786, U01HL089907, and U01HL089645. The content of this article does not necessarily represent the views of the National Heart, Lung, and Blood Institute or the Department of Health and Human Services, St. Jude Drug Foundation and Corporation, Biosense Webster, Medtronic, or Boston Scientific Corporation.