1. Nephrology Division, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
2. Nephrology Division, Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA.
3. Nephrology Division, the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou 510655, China.
4. Nephrology Division, Shunde Hospital of Southern Medical University, Foshan 528300, China.
5. Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.
6. Division of Gastrointestinal Surgery, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.