1. Department of Clinical Laboratory, Tangshan Gongren Hospital, Tangshan, Hebei 063000, P.R. China
2. Department of Radiology, Tangshan People's Hospital, Tangshan, Hebei 063000, P.R. China
3. Department of Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
4. Department of Neurology, Zunhua Renmin Hospital, Zunhua, Hebei 064200, P.R. China
5. Department of Medical Laboratory, Tangshan People's Hospital, Tangshan, Hebei 063000, P.R. China
6. Nuclear Medicine Clinical Laboratory, Tangshan People's Hospital, Tangshan, Hebei 063000, P.R. China
7. The Cancer Institute, Tangshan People's Hospital, Tangshan, Hebei 063000, P.R. China