1. Department of Pediatrics, Sarawak General Hospital, Kuching, Sarawak, Malaysia
2. Respiratory and Enteric Viruses Branch, Atlanta, Georgia
3. Epidemic Intelligence Service, Epidemiology Program Office, Centers for Disease Control and Prevention, Atlanta, Georgia
4. Department of Community Medicine, Institute of Medical Research, Kuala Lumpur, Malaysia
5. State Health Department, Kuching, Sarawak, Malaysia
6. Infectious Disease Pathology Activity, Division of Viral and Rickettsial Diseases, Atlanta, Georgia
7. Department of Pediatrics, Miri Hospital, Miri, Sarawak, Malaysia
8. Ministry of Health, Kuala Lumpur, Malaysia