1. Department of Toxicology, Guilin Medical University, Guilin, Guangxi 541004, P.R. China
2. Department of Oncology, Second Affiliated Hospital of Guilin Medical College, Guilin, Guangxi 541004, P.R. China
3. Laboratory of Molecular Biology, Shenzhen Nanshan Center for Chronic Disease Control, Shenzhen, Guangdong 518054, P.R. China