1. Faculty of Clinical Medicine, Changchun Medical College, Changchun, Jilin 130031, P.R. China
2. Department of Imaging, The First Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
3. Department of Endocrinology, The Second Hospital of Jilin University, Jilin University, Changchun, Jilin 13000, P.R. China