1. Department of Laboratory Medicine, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
2. Department of Laboratory Medicine, Clinical Laboratory, The Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350001, P.R. China
3. Department of Cancer Biology, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA