1. Gout Clinic, Midorigaoka Hospital, Osaka, Japan
2. Department of Rheumatology, Midorigaoka Hospital, Osaka, Japan
3. Development Planning Dept., Nippon Chemiphar Co., Ltd., Tokyo, Japan
4. Department of Radiology, Midorigaoka Hospital, Osaka, Japan
5. Department of Urology, Midorigaoka Hospital, Osaka, Japan