1. Research Center for Medical Glycoscience (RCMG), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
2. Department of Virology and Liver Unit, Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho, Japan
3. the Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan