1 Department of Medical Sciences, Division of Rheumatology, Uppsala University, 751 85 Uppsala, Sweden; Department of Internal Medicine, Rheumatology, Istanbul Florence Nightingale Hospital, Istanbul, Turkey. Electronic address: [email protected].
2 Clinical Immunology and Allergy, University of Crete Medical School, Heraklion, Greece.
3 Rheumatology and Clinical Immunology Unit, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece.