1. Department of Rehabilitation Medicine, College of Medicine, Yeungnam University, Daegu, Republic of Korea
2. Department of Physical Medicine and Rehabilitation, Centre Hospitalier de l’Université de Montréal, Montreal, Canada
3. Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
4. Department of Medical Statistics, College of Medicine, Catholic University of Daegu, Daegu, Republic of Korea