1. The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (M.G., H.N., Y.H., X.L., N.Z., M.C., X.C., W.H., S.Z.).
2. Cardiac Rhythm Heart Failure, Medtronic, plc, Minneapolis, MN (X.Z.).
3. Division of Cardiology, Medical University of South Carolina, Charleston (M.R.G.).