1. Department of Physical Therapy, The Graduate School, Yonsei University, Wonju, Korea
2. Department of Physical Therapy, College of Health Sciences, Yonsei University, Wonju, Korea
3. Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Wonju, Korea
4. Department of Urology, Kangdong Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Korea