1. Department of Bacteriology, Capital Institute of Pediatrics, Beijing 100020, P. R. China
2. Treatment and Research Center for Infectious Diseases, the Fifth Medical Center of PLA General Hospital, Beijing 100039, P. R. China
3. Beijing Macro&Micro-Test Bio-Tech Company, Limited, Beijing 101300, P. R. China
4. Department of Virology, Capital Institute of Pediatrics, Beijing 100020, P. R. China
5. Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center, Shanghai 201203, China
6. Capital Institute of Pediatrics, Beijing 100020, P. R. China
7. Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
8. Department of Biochemistry and Immunology, Capital Institute of Pediatrics, Beijing 100020, P. R. China