1 Department of Physical and Rehabilitation Medicine Hacettepe University Medical School Ankara, Turkey. lozcakar@yahoo.com.
2 Department of Physical Medicine and Rehabilitation, Physical Medicine and Rehabiliation Hospital, Andalous, Kuwait. dr.ahmad.j.abdulsalam@gmail.com.
3 Department of Biomedical and Neuromotor Science, Physical and Rehabilitation Medicine Unit, Istituto di Ricovero e Cura a Carattere Scientifico, Rizzoli Orthopedic Institute, Bologna, Italy. vincenzo.ricci58@gmail.com.