1. Department of Biomedical and Neuromotor Science Physical and Rehabilitation Medicine Unit, Istituto di Ricovero e Cura a Carattere Scientifico Rizzoli Orthopedic Institute Bologna Italy
2. Musculoskeletal Ultrasound School Italian Society for Ultrasound in Medicine and Biology Bologna Italy
3. Department of Physical Medicine and Rehabilitation National Taiwan University Hospital Bei‐Hu Branch Taipei Taiwan
4. National Taiwan University College of Medicine Taipei Taiwan
5. Department of Physical and Rehabilitation Medicine Hacettepe University Medical School Ankara Turkey