1. TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, P.R. China
2. The Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, 23 Hongda Street, TEDA, Tianjin 300457, P.R. China
3. LanLing Center for Disease Control and Prevention, 1 City Huibao Road, Lanling 276000, Lanling Shandong, P.R. China
4. Taian Center for Disease Control and Prevention, 33 Changcheng Road, Taian 271000, Shandong, P.R. China
5. Jinan KeJia Medical Laboratory, Inc., 800 Minghu West Road, Jinan 250001, Shandong, P.R. China
6. Shandong Center for Disease Control and Prevention, 16992 City Ten Road, Jinan 250014, Shandong, P.R. China