1. Department of Infectious Disease and Immunology, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Aichi, Japan.
2. Department of Virology and Liver Unit, Nagoya City University, Nagoya, Aichi, Japan.
3. Department of Clinical Research Management, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Aichi, Japan.
4. Tokyo Metropolitan Institute of Public Health, Tokyo, Japan.
5. Department of Infectious Diseases, Okinawa Prefectural Nanbu Medical Center and Children's Medical Center, Okinawa, Japan.
6. Department of Infections, Respiratory and Digestive Medicine Control and Prevention of Infectious Diseases, University of the Ryukyus, Okinawa, Japan.
7. Division of Basic Medicine, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.