1. Department of Medical Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P. R. China
2. Laboratory Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, P. R. China
3. Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Zhanjiang, Guangdong, P. R. China