1. Henan key laboratory of Tumor Epidemiology & Proteomics Research Center, College of Public Health, Zhengzhou University, Zhengzhou, Henan, P.R. China
2. Department of Biological Sciences, The University of Texas at El Paso, El Paso, Texas, United States
3. State key laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, P.R. China