1. Department of Community Health and Clinical Epidemiology; St. Mary's College; Kurume Japan
2. Division of Nephrology; St. Mary's Hospital; Kurume Japan
3. Graduate School of Nursing Science; St. Mary's College; Kurume Japan
4. Department of Integrated Therapy for Chronic Kidney Disease, Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
5. Department of Medicine and Clinical Science, Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
6. Department of Public Health; Osaka City University Graduate School of Medical Science; Osaka Japan