1. Center for Infectious Disease Research, Department of Basic Medical Science, School of Medicine, Tsinghua University, Beijing, China
2. Department of Laboratory Medicine, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
3. Department of Integrative Biomedical and Diagnostic Sciences, Oregon Health and Science University School of Dentistry, Portland, Oregon, USA
4. Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing, China