- Rheumatology Clinic, Athens Naval Hospital, Athens, Greece
- Euromedica General Clinic of Thessaloniki, Thessaloniki, Greece
- Olympion Therapeutirion General Clinic, Patras, Greece
- Rheumatology Unit, Agios Andreas Hospital, Patras, Greece
- Laikon General Hospital, Athens, Greece
- 4th Department of Internal Medicine, Hippokrateion General Hospital of Thessaloniki, School of Medicine, Aristotle University, Thessaloniki, Greece
- Evangelismos General Hospital, Athens, Greece
- UCB Pharma, Monheim am Rhein, Germany
G Katsifis, A Theodoridou
, A Bounas
, P Georgiou
, P Sfikakis
, K Fragiadaki
, T Dimitroulas
, E Mole
, L Bauer
, T Kumke
, B Hoepken