1. Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
2. Department of Nephrology, Sichuan Academy of Medical Sciences and Sichuan Provincial People' s Hospital, University of Electronic Science and Technology of China, Chengdu, China
3. Department of Nephrology, Nanchong Central Hospital, The Second Affiliated Medical College of North Sichuan Medical College, Nanchong, China