1 Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan. wwtaustin@yahoo.com.tw.
2 Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan. viph062@gmail.com.
3 Department of Rehabilitation Medicine, First Faculty of Medicine and General University Hospital, Charles University in Prague, Prague, Czech. kamal.mezian@gmail.com.
4 Physical and Rehabilitation Medicine Unit, Luigi Sacco University Hospital, ASST Fatebenefratelli- Sacco, Milan, Italy. vincenzo.ricci58@gmail.com.
5 Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan. kvchang011@gmail.com.
6 Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey. lozcakar@yahoo.com.