1. Department of Kampo Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
2. Immunology Frontier Research Center, Laboratory of Brain-Immune Interaction, Osaka University, Suita, Japan
3. Department of Pain Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
4. Department of Orthopaedic Surgery, Graduate School of Medicine, Osaka University, Suita, Japan