Takako Inoue1, Shintaro Yagi2, Yasuhito Tanaka3. 1. Department of Clinical Laboratory Medicine, Nagoya City University Hospital, Nagoya, Japan. 2. Research and Development Department, Advanced Life Science Institute, Inc., Hachioji, Tokyo, Japan. 3. Department of Clinical Laboratory Medicine, Nagoya City University Hospital, Nagoya, Japan; Department of Virology and Liver Unit, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan; Department of Gastroenterology and Hepatology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan. Electronic address: ytanaka@kumamoto-u.ac.jp.