1. Department of Nephrology, Guangzhou Red Cross Hospital of Jinan University, Guangdong Province, P.R. China
2. Department of Nephrology, The 2nd People’s Hospital of Bijie, Bijie, Guizhou Province, P.R. China
3. Guangzhou Institute of Disease-Oriented Nutritional Research, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, Guangdong Province, P.R. China