State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, FuwaiHospital, NationalCenter for Cardiovascular Diseases, Chinese Academy of MedicalSciences and Peking Union MedicalColege, Beijing, China.;
Department of Cardiology, First Af iliated Hospitalof Harbin Medical University, Harbin, China;
Department of Cardiology, Nanjing Drum Tower Hospital, Nanjing, China;
State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, FuwaiHospital, NationalCenter for Cardiovascular Diseases, Chinese Academy of MedicalSciences and Peking Union MedicalColege, Beijing, China.;
State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, FuwaiHospital, NationalCenter for Cardiovascular Diseases, Chinese Academy of MedicalSciences and Peking Union MedicalColege, Beijing, China.;
Department of Cardiology, ShanghaiInstitute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.;
State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, FuwaiHospital, NationalCenter for Cardiovascular Diseases, Chinese Academy of MedicalSciences and Peking Union MedicalColege, Beijing, China.;
Department of Cardiology, Beijing Anzhen Hospital, CapitalMedical University, Beijing, China;
Department of Cardiology, Beijing Hospital, Beijing, China;
Department of Cardiology, First People's HospitalAf iliated to ShanghaiJiao Tong University, Shanghai, China.;
Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong GeneralHospital, Guangdong Academy of Medical Sciences, Guangzhou, China;
Department of Cardiology, First HospitalBeijing MedicalUniversity, Beijing, China;
