1. Department of Cardiology; West China Hospital; Sichuan University; Chengdu China
2. Department of Cardiology; State Key Laboratory of Cardiovascular Disease; Fuwai Hospital; National Center for Cardiovascular Disease; Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
3. Department of Echocardiography; State Key Laboratory of Cardiovascular Disease; Fuwai Hospital; National Center for Cardiovascular Disease; Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China