1. Department of Anesthesiology Pain Management and Research Center China Medical University Hospital Taichung Taiwan
2. Department of Neurology Taichung Tzu Chi Hospital Buddhist Tzu Chi Medical Foundation Taichung Taiwan
3. Faculty of Medicine National Yang‐Ming University School of Medicine Taipei Taiwan
4. Brain Research Center National Yang‐Ming University School of Medicine Taipei Taiwan
5. Department of Neurology China Medical University Hospital Taichung Taiwan
6. Department of Neurology Neurological Institute, Taipei Veterans General Hospital Taipei Taiwan
7. Institute of Clinical Medicine National Yang‐Ming University School of Medicine Taipei Taiwan
8. Department of Anesthesiology School of Medicine China Medical University Taichung Taiwan
9. Center for Regional Anesthesia and Pain Medicine (CRAPM) of Wan Fang Hospital Taipei Medical University Taipei Taiwan