1. Institute of Public Health, School of Medicine National Yang‐Ming University Taipei Taiwan, R.O.C
2. Department of Statistics Tugman University Taichung Taiwan, R.O.C
3. Division of Nephrology, Department of Medicine Taipei Veterans General Hospital Taipei Taiwan, R.O.C
4. Institute of Clinical Medicine National Yang‐Ming University Taipei Taiwan, R.O.C
5. College of Medicine National Taiwan University Taipei Taiwan, R.O.C
6. Cardiovascular Center National Taiwan University Hospital, Hsinchu Branch Hsinchu Taiwan, R.O.C