[1] IRCCS Rizzoli Orthopaed Inst, Phys & Rehabil Med Unit, Dept Biomed & Neuromotor Sci, Bologna, Italy
[2] Italian Soc Ultrasound Med & Biol SIUMB, Musculoskeletal Ultrasound Sch, Bologna, Italy
[3] Natl Taiwan Univ Hosp, Bei Hu Branch, Dept Phys Med & Rehabil, Taipei, Taiwan
[4] Natl Taiwan Univ, Coll Med, Taipei, Taiwan
[5] Hacettepe Univ, Med Sch, Dept Phys & Rehabil Med, Ankara, Turkey