1. Kobayakawa Orthopedic and Rheumatologic Clinic , Shizuoka, Japan
2. Department of Orthopaedic Surgery, Shinshu University School of Medicine , Matsumoto, Nagano, Japan
3. Department of Orthopedic Surgery and Rheumatology, Toyota Kosei Hospital , Toyota, Aichi, Japan
4. Department of Rheumatology, Toyohashi Municipal Hospital , Toyohashi, Aichi, Japan
5. Department of Human Nutrition, Faculty of Human Nutrition, Tokyo Kasei Gakuin University , Tokyo, Japan