1. Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.
2. Chongqing Institute of Cardiology, Chongqing 400042, P.R. China.
3. Department of Cardiology, Chengdu Military General Hospital, Chengdu, Sichuan 610083, P.R. China.
4. Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA.
5. Department of Physiology, Kansas City University, Kansas City, MO 64106, USA.