1. Physical Therapy and Rehabilitation Unit, Policlinico di Modena, 41125 Modena, Italy
2. Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, 41121 Modena, Italy
3. Department of Orthopedic and Traumatological Surgery, IRCCS Istituto Ortopedico Rizzoli, University of Bologna, 40136 Bologna, Italy
4. Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, 40136 Bologna, Italy
5. Musculoskeletal Ultrasound School, Italian Society for Ultrasound in Medicine and Biology, 40136 Bologna, Italy
6. Rheumatology Department, Fondazione IRCCS Policlinico San Matteo, University of Pavia, 27100 Pavia, Italy
7. Family Medicine Department, ASL Tuscany, 55049 Viareggio, Italy
8. Physical Therapy and Rehabilitation Unit, IRCCS Istituto Ortopedico Rizzoli, University of Bologna, 40136 Bologna, Italy