Shang-Feng Yang1,2, Po-Hsun Huang3,4,2,5. 1. Division of Nephrology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan, ROC. 2. Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan, ROC. 3. Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC. 4. Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC. 5. Cardiovascular Research Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.