1. Department of Virology and Liver Unit; Nagoya City University Graduate School of Medical Sciences; Nagoya Aichi Japan
2. Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Aichi Japan
3. Department of Transfusion Medicine; Clinical CenterInfectious Disease and Immunogenetics Section; National Institutes of Health; Bethesda Maryland