1. Department of Clinical Laboratory Medicine, Faculty of Medicine, Kochi University School of Medicine, Nankoku, Kochi
2. Departments of Internal Medicine
3. Pathology, Shimonoseki-saiseikai Hospital, Shimonoseki
4. Department of Pathology, Shimonosekishi-ishikai Hospital, Shimonoseki
5. Department of Infectious Diseases, National Research Institute for Child Health and Development, Tokyo
6. Department of Laboratory Sciences, Kumamoto University School of Health Sciences, Kumamoto
7. Department of Laboratory Sciences, Faculty of Health Sciences, Yamaguchi University School of Medicine, Yamaguchi, Japan