1. National and Kapodistrian University of Athens, Attikon University Hospital, Clinic of Pediatrics, Athens, Greece

2. National and Kapodistrian University of Athens, Attikon University Hospital, Clinic of Radiology, Athens, Greece

3. National and Kapodistrian University of Athens, Attikon University Hospital, Clinic of Rheumatology and Bone Unit, Division of Orthopedic, Athens, Greece