1. Division of General Medicine, Department of Education, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
2. Division of Nephrology, Department of Internal Medicine, Mackay Memorial Hospital, New Taipei City, Taiwan
3. Division of Nephrology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
4. Division of Nephrology, Department of Internal Medicine, Hsin-Jen Hospital, New Taipei City, Taiwan
5. School of Nutrition and Dietetics, University of Akron, Akron, USA