1. General Hospital of Shenyang Military Region; Shenyang Liaoning Province China
2. Shanxi Cardiovascular Hospital; Taiyuan Shanxi Province China
3. Shijiazhuang Peace Hospital; Shijiazhuang Hebei Province China
4. No. 306 Hospital of PLA, Beijing; Beijing City China
5. Anhui Provincial Hospital; Hefei Anhui Province China
6. Beijing CAPF General Hospital, Beijing; Beijing City China
7. Kunming General Hospital of Chengdu Military Region; Kunming Yunnan Province China
8. Columbia University Medical Center and the Cardiovascular Research Foundation; New York