1. Division of Communicable Diseases, World Health Organization Regional Office for the Western Pacific, United Nations Avenue, Manila, Philippines.
2. United States Centers for Disease Control and Prevention, Phnom Penh, Cambodia.
3. Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland.
4. Department of HIV, World Health Organization, Geneva, Switzerland.
5. Department of Communicable Diseases, World Health Organization Regional Office for South-East Asia, New Delhi, India.
6. Department of Communicable Diseases and Health Analysis, Pan American Health Organization, Washington, United States of America.