1. Centers for Disease Control and Prevention, Atlanta, Georgia, USA;
2. Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China (PRC);
3. Southeast University, Nanjing, PRC;
4. Chinese University of Hong Kong, Hong Kong, Special Administrative Region (SAR), PRC;
5. Gadjah Mada University, Yogyakarta, Indonesia;
6. International Vaccine Institute, Seoul, Korea;
7. Chonbuk National University Medical School, Chonju, Korea;
8. Hanyang University School of Medicine, Seoul, Korea;
9. Institute of Pediatrics, Kuala Lumpur, Malaysia;
10. Kuching Hospital, Kuching, Malaysia;
11. Ministry of Health, Yangon, Myanmar;
12. Department of Health, Taipei, Taiwan;
13. Ministry of Public Health, Nonthaburi, Thailand;
14. Poliomyelitis Vaccine Research and Production Center, Hanoi, Vietnam;
15. Pasteur Institute, Ho Chi Minh City, Vietnam