1. ASIC and System State Key Laboratory, School of Microelectronics, Fudan University, Shanghai 200433, P. R. China
2. Viral Hemorrhagic Fevers Research Unit, CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, P. R. China
3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China