1. Medical School University of Cyprus Nicosia Cyprus
2. Department of Neurology Nicosia General Hospital Nicosia Cyprus
3. Department of Physiotherapy, Laboratory of Neuromuscular and Cardiovascular Study of Motion University of West Attica Egaleo Greece
4. Second Department of Neurology, Attikon Hospital, School of Medicine National and Kapodistrian University of Athens Athens Greece
5. Sheffield Teaching Hospitals NHS Trust Sheffield UK
6. European League Against Pain Zurich Switzerland
7. Department of Internal Medicine Perugia University Perugia Italy
8. Medical School University of Sheffield Sheffield UK