1. Physical and Rehabilitation Medicine Unit Department of Biomedical and Neuromotor Science IRCCS Rizzoli Orthopaedic Institute Bologna Italy
2. Department of Ultrasound Misericordia di Pistoia Pistoia Italy
3. Scuola Siumb di Ecografia Muscolo‐Scheletrica Pisa Italy
4. Department of Physical and Rehabilitation Medicine Hacettepe University Medical School Ankara Turkey