1. Department of Internal Medicine, General Hospital Korgialenio-Benakio HRC, Athens, Greece
2. 4th Department of Internal Medicine, “Attikon” University Hospital of Athens, Greece
3. Rheumatology and Clinical Immunology Unit, 4th Department of Internal Medicine, “Attikon” University Hospital of Athens, Greece
Konstantinos Thomas, Dionisios Nikolopoulos, Antigone Pieta, Pelagia Katsimbri, Dimitrios Boumpas, Theofanis Karageorgas