1. Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College
2. Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming, China
3. Institute of Medical Biology, Chinese Academy of Medical Sciences
4. GuangXi Province Center for Disease Prevention and Control, Nanning, China
5. Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College
6. Liujiang District Center for Disease Prevention and Control, Liuzhou, China
7. Liucheng County Center for Disease Prevention and Control, Liuzhou, China
8. Rong'an County Center for Disease Prevention and Control, Liuzhou, China
9. Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming
10. National Institutes for Food and Drug Control