1. Key Laboratory of AIDS Immunology of the National Health and Family Planning Commission Department of Laboratory Medicine China Medical University Shenyang China
2. The Core Laboratory for Public Health Science and Practice China Medical University Shenyang China
3. Department of Neurosurgery The First Affiliated Hospital China Medical University Shenyang China
4. National Center for Biodefense and Infectious Diseases Department of Molecular and Microbiology George Mason University Manassas VA USA