1. Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning City, Guangxi, China
2. National Institutes for Food and Drug Control, Beijing, China
3. Wuzhou Center for Disease Control and Prevention, Wuzhou City, Guangxi, China
4. Mengshan Center for Disease Control and Prevention, Disease Prevention, Development District, Wuzhou City, Guangxi, China
5. GSK, Bangalore, India
6. GSK, King of Prussia, PA, USA
7. GSK, Wavre, Belgium