1. Division of Cardiology, Department of Internal Medicine; Taichung Veterans General Hospital Chiayi Branch; Chiayi Taiwan
2. Cardiovascular Center; Taichung Veterans General Hospital; Taichung Taiwan
3. Department of Medicine, Institute of Clinical Medicine; National Yang-Ming University School of Medicine; Taipei Taiwan
4. Department of Medicine; National Yang Ming University School of Medicine; Taipei Taiwan
5. Division of Cardiology, Department of Medicine, Beijing Hospital of Traditional Chinese Medicine Hospital; Capital Medical University; Beijing China