1. Department of Physical Medicine and Rehabilitation National Taiwan University Hospital Bei‐Hu Branch Taipei Taiwan
2. Department of Physical Medicine and Rehabilitation National Taiwan University College of Medicine Taipei Taiwan
3. Center for Regional Anesthesia and Pain Medicine Wang‐Fang Hospital Taipei Medical University Taipei Taiwan
4. Department of Rehabilitation Medicine First Faculty of Medicine Charles University and General University Hospital in Prague Prague Czech Republic
5. Institute of Anatomy First Faculty of Medicine Charles University Prague Czech Republic
6. Department of Physical and Rehabilitation Medicine Hacettepe University Medical School Ankara Turkey