1. Center for Area Studies, Korea Institute for International Economic Policy, Sejong, Korea.
2. Department of Pathology, Labcorp Drug Development, Greenfield, IN, USA.
3. Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
4. Division of Infectious Disease, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea.
5. Division of Infectious Disease, Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea.