1. Internal Medicine Department, Pfizer Hellas S.A., Athens, Greece
2. 2nd Orthopedic Department, KAT General Hospital of Attica, Athens, Greece
3. 5th Orthopedic Department, Asclepeion General Hospital, Athens, Greece
4. 6th Orthopedic Department, Asclepeion General Hospital, Athens, Greece
5. 3rd Orthopedic Department for Sports Injuries and Regenerative Medicine, Mitera General Hospital, Athens, Greece
6. 6th Orthopedic Department, Hygeia Hospital, Athens, Greece
7. 1st Orthopedic Department, Mitera General Hospital, Athens, Greece
8. Rheumatology Department, Naval Hospital, Athens, Greece
9. Department of Pathophysiology, National and Kapodistrian University of Athens, Greece
10. 4th Internal Medicine Department, Attikon University Hospital, Athens, Greece