1. Department of Internal Medicine, Kanazawa University*, Kanazawa 920-8640, Japan
2. KKR† Kanazawa Hospital, Kanazawa 921-8035, Japan‡
3. Department of Hygiene, Graduate School of Medical Science, Kanazawa University, Kanazawa 920-8640, Japan
4. Department of Endocrinology and Metabolism, Fujita Health University, Toyoake 470-1192, Japan
5. Department of Internal Medicine, University of Fukui Faculty of Medical Sciences*, Fukui 910-1193, Japan
6. Third Department of Internal Medicine, University of Fukui Faculty of Medical Sciences, Fukui 910-1193, Japan
7. Komatsu University#, Komatsu 923-0921, Japan