1. Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
2. Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
3. Department of Infectious Diseases, The University of Tokyo Hospital, Tokyo, Japan
4. Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
5. Bioscience Division, TOSOH Corporation, Kanagawa, Japan