1. Department of Internal Medicine Japan Agricultural Cooperatives Kochi Hospital Nankoku Kochi Japan
2. Department of Community Medicine for Respirology, Graduate School of Biomedical Sciences Tokushima University Tokushima Japan
3. Department of Orthopaedic Surgery Japan Agricultural Cooperatives Kochi Hospital Nankoku Kochi Japan
4. Department of Rheumatology Kochi Memorial Hospital Kochi Japan