1. Division of Rheumatology, Department of Medicine; Showa University Graduate School of Medicine; Tokyo Japan
2. Department of Healthcare Epidemiology; School of Public Health in the Graduate School of Medicine, Kyoto University; Kyoto Japan
3. Department of Health Promotion and Human Behaviour; Kyoto University Graduate School of Medicine/School of Public Health; Kyoto Japan
4. Department of General Internal Medicine; Shirakawa Satellite for Teaching And Research (STAR), Fukushima Medical University; Fukushima Japan
5. Azai-Higashi Clinic; Nagahama city; Shiga Japan
6. Department of Nephrology, Rheumatology, Endocrinology and Metabolism; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
7. Department of Psychiatry; Soseikai General Hospital; Kyoto Japan