SHI Yong~1,HU Meng-lin~1,YU Ai-qing~2,SONG Xiang-fu~1,XIU Jia-qi~2,LI Tie-ji~1(1.Department of Sanitary Analysis,School of Public Health,Jilin University,Changchun 130021,China,2.First Hospital,China)
R285.5