1. Department of Pharmacy, Harbin Medical University Cancer Hospital , Harbin , P.R. China
2. Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa , Honolulu, HI , USA
3. Department of Statistics, Florida State University , Tallahassee, FL 32304 , USA
4. College of Life Science, Longyan University , Longyan, Fujian 364012 , P.R. China
5. Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology , Longyan, Fujian 364012 , P.R. China
6. Fujian Provincial Universities Key Laboratory of Preventive Veterinary Medicine and Biotechnology (Longyan University) , Longyan, Fujian 364012 , P.R. China
7. Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa , Honolulu, HI , USA
8. Department of Biostatistics, The University of Texas MD Anderson Cancer Center , Houston, TX , USA