1. Department of Physical Therapy, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
2. Department of Rehabilitation Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
3. PO Box 1167, Kensington, Victoria, Australia
4. Faculty of Arts and Sciences, Hong Kong Institute of Education, Hong Kong, China
5. School of Primary Health Care, Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria, Australia