Affiliation: | 1. Department of Rheumatology, The Chenzhou First People's Hospital, , Changsha, China;2. Department of UItrasonic Diagnosis, The Second Xiangya Hospital of Central South University, , HuNan, China;3. Department of Radiology, The Second Xiangya Hospital of Central South University, , HuNan, China;4. Department of Rheumatology, The Second Xiangya Hospital of Central South University, , HuNan, China |