Funding Support and Author Disclosures Dr. Felker has received research grants from the National Heart, Lung, and Blood Institute, American Heart Association, Amgen, Bayer, Merck, Cytokinetics, and Myokardia; has acted as a consultant to Novartis, Amgen, Bristol Myers Squibb, Cytokinetics, Medtronic, Cardionomic, Innolife, Boehringer Ingelheim, American Reagent, Abbott, Eidos Therapeutics, Reprieve, and Sequana; and has served on clinical endpoint committees/data safety monitoring boards for Amgen, Merck, Medtronic, EBR Systems, V-Wave, LivaNova, Siemens, and Rocket Pharma. Dr. Greene has received a Heart Failure Society of America/Emergency Medicine Foundation Acute Heart Failure Young Investigator Award funded by Novartis; has received research support from the American Heart Association, Amgen, AstraZeneca, Bristol Myers Squibb, Merck, and Novartis; has served on advisory boards for Amgen and Cytokinetics; and has served as a consultant for Amgen and Merck.