1. Korea Disease Control and Prevention Agency, Cheongju, Korea.
2. Korea University Anam Hospital, Seoul, Korea.
3. Incheon Metropolitan Government, Incheon, Korea.
4. Gyeonggi-do Infectious Disease Control Center, Suwon, Korea.
5. Seoul Metropolitan Government, Seoul, Korea.
6. Capital Regional Center for Disease Control and Prevention, Seoul, Korea.
7. Incheon Airport National Quarantine Station, Incheon, Korea.