Division of Endocrine and Diabetes, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan. Division Department of Diabetes and Endocrinology and Internal Medicine, Fukui Prefectural Hospital, 2-8-1 Yotsui, Fukui, Fukui, 910-8526, Japan. Division of Endocrine and Diabetes, Department of Internal Medicine, Kanazawa University Graduate School of Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan. skarashima@staff.kanazawa-u.ac.jp. Department of Laboratory Sciences, Faculty of Health Sciences, Kanazawa University, Kanazawa, Japan. School of Electrical, Information and Communication Engineering, College of Science and Engineering, Kanazawa University, Kanazawa, Japan. Department of Hygiene, Kanazawa University Graduate School of Medicine, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan. Health Care Center, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan. Division Department of Internal Medicine, Houju memorial hospital, 11-71 Midorigaoka, Nomi, Ishikawa, 923-1226, Japan. Institute of Liberal Arts and Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan. Department of Health Promotion and Medicine of the Future, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan.