1. Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
2. Department of Laboratory Medicine, The People's Hospital of Shajing, Shenzhen, Guangdong 518104, P.R. China
3. Department of Pathology, Guangdong Women and Children's Hospital, Guangzhou, Guangdong 511400, P.R. China
4. Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China