1. Clinical Research Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
2. Clinical College, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
3. School of Clinical Laboratory Sciences, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
4. School of Biology and Engineering, Guizhou Medical University, Guiyang, Guizhou 550025, P.R. China
5. Department of Clinical Laboratory, Mianyang Central Hospital, Mianyang, Sichuan 621000, P.R. China