1. Department of Radiology, Xinglin Branch Hospital, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
2. Department of Pathology, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
3. Department of Nuclear Medicine, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, P.R. China