1. Nephrology, Huashan Hospital, Fudan University, Shanghai 200040, China
2. National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
3. Nutritional Department, Huashan Hospital, Fudan University, Shanghai 200040, China
4. Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, University of California Irvine Medical Center, Orange, CA 92868, USA
5. Fielding School of Public Health at UCLA, Los Angeles, CA 90095, USA
6. Los Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, CA 90502, USA