1. University of Padova, Department of Information Engineering, G. Gradenigo 6/A, Padova 35131, Italy
2. General Hospital of Bolzano, Rheumatology Unit, Via Lorenz Boehler 5, Bolzano 39100, Italy
3. University of Padova, Department of Medicine, Via Giustiniani 2, Padova 35128, Italy
4. Nursing Home Giovanni XXIII, Via Giovanni XXIII 7, Monastier di Treviso (TV) 31050, Italy