Affiliation: | 1.Department of Central Supply, Jinan People′s Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China ;2.Department of Radiology, Jinan People′s Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China ;3.Department of Neurosurgery, Jinan People′s Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China ; |