1. Department of Cardiology, The Fourth Medical Center of PLA General Hospital, Beijing 100853, P.R. China
2. Department of Intensive Care, Chongqing Traditional Chinese Medicine Hospital, Chongqing 400021, P.R. China
3. Department of the Functional Check, Hospital of Beijing The Hui People, Beijing 100853, P.R. China
4. Department of Radiology, Chongqing Traditional Chinese Medicine Hospital, Chongqing 400021, P.R. China