1. Department of Transfusion Medicine, Clinical Center; National Institutes of Health; Bethesda MD
2. Department of Gastroenterology and Metabolism; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
3. Department of Virology and Liver Unit; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
4. Hepatic Pathogenesis Section, Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases; National Institutes of Health; Bethesda MD