1. Department of Ultrasound, Huangshi Central Hospital of Hubei Polytechnic University, Huangshi, Hubei, China;
2. Department of Nephrology, Huangshi Central Hospital of Hubei Polytechnic University, Huangshi, Hubei, China;
3. Department of Ultrasound, Renmin Hospital of Wuhan University, Wuhan, Hubei, China