1. Department of Internal Medicine, School of Medicine, Kitasato University, Kanagawa, Japan
2. Sixth Department of Internal Medicine, School of Medicine, Tokai University, Kanagawa, Japan
3. Third Department of Internal Medicine, Emeritus Prof, Nikon University, School of Medicine, Tokyo, Japan
4. Third Department of Internal Medicine, Hokkaido University, School of Medicine, Hokkaido, Japan
5. Third Department of Internal Medicine, Tohoku University, School of Medicine, Miyagi, Japan
6. Department of Internal Medicine, Institute of Clinical Medicine, University of Tsukuba School of Medicine, Ibaraki, Japan
7. First Department of Internal Medicine, Hamamatsu University, School of Medicine, Shizuoka, Japan
8. Second Department of Internal Medicine, Nagoya University, School of Medicine, Aichi, Japan
9. First Department of Internal Medicine, Emeritus Prof, Hiroshima University, School of Medicine, Hiroshima, Japan
10. Emeritus Prof, Nikon University, School of Medicine, Tokyo, Japan
11. Health Science Center, Kanagawa
12. Emeritus Prof, Hiroshima University, School of Medicine, Hiroshima, Japan