1. Center for Disease Prevention and Control; Nanjing City, Jiangsu Province, PR China
2. National Institute for Food and Drug Control; Beijing, PR China
3. Center for Disease Prevention and Control; Taizhou City, Jiangsu Province, PR China
4. Center for Disease Control and Prevention; Jintan City, Jiangsu Province, PR China
5. Roche Hong Kong Ltd; Hong Kong, PR China
6. GlaxoSmithKline Vaccines; Shanghai, PR China
7. GlaxoSmithKline Vaccines; Bangalore, India
8. GlaxoSmithKline Vaccines; Wavre, Belgium