1. Department of Physical Therapy, Graduate School, Yonsei University, Wonju, Kangwon-do, Republic of South Korea
2. Department of Physical Therapy, Division of Health Science, Baekseok University, Cheonan-si, Chungcheongnam-do, Republic of South Korea
3. Department of Physical Therapy, College of Health and Medical Science, Cheongju University, Cheongju-si, Chungcheongbuk-do, Republic of South Korea