1. Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
2. The Key Laboratory of Remodeling-Related Cardiovascular Disease, Beijing Institute of Heart, Lung and Blood Vessel Disease, Ministry of Education, Beijing, China.
3. Department of Cardiology, General Hospital of the Air Force, Beijing, China.
4. School of General Medicine and Continuing Education, Capital Medical University, Beijing, China.