1. Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (C.F., M.G., S.H., Z.W.).
2. Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, China (X.Y.).
3. Yale School of Public Health, New Haven, CT (W.W.W.).
4. Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (J.W.).
5. Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston (W.L.).
6. Institute of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (K.L.).