1. Department of Psychiatry Takamatsu Red Cross Hospital Takamatsu‐Shi Kagawa Japan
2. Department of Clinical Research and Management University of Ryukyus Graduate School of Medicine Nishihara‐cho Okinawa Japan
3. Department of Clinical Pharmacology & Therapeutics University of Ryukyus Graduate School of Medicine Nishihara‐cho Okinawa Japan
4. Department of Orthopedics Okinawa Prefectural Nanbu Medical Center & Children's Medical Center Heabaru‐cho Okinawa Japan