1Third Department of Internal Medicine, Evaggelismos General Hospital, Athens, Greece
2Department of Rheumatology, “Asklepieion” General Hospital, Athens, Greece
32nd Unit of Diagnostic and Interventional Radiology, National and Kapodistrian University of Athens, Medical School, Evgenidion Hospital, Athens, Greece
4Department of Rheumatology, Evaggelismos General Hospital, Athens, Greece
5Department of Internal Medicine, “Mediterraneo” Hospital, Athens, Greece