1. From the Arrhythmia Center and Clinical Electrophysiological Laboratory, FuWai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China (Z.L., J.M., P.F., K.Z., X.R., J.H., Q.Y., F.O., S.Z.); Department of Cardiology, Qingdao Fuwai Hospital, Qingdao, China (Y.C.); Department of Cardiology, Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangzhou, China (P.Y.); Department of Cardiology, First Affiliated Hospital of China Medical...