1. Nam’s Orthopedic Running Clinic, 494, Yongmasan-ro, Jungnang-gu, Seoul 02182, Republic of Korea
2. Department of Orthopedic Surgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul 02841, Republic of Korea
3. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Boston, MA 02141, USA
4. Department of Orthopedic Surgery, Inje University Sanggye Paik Hospital, Seoul 01757, Republic of Korea
5. Department of Orthopedic Surgery, Gyeong-in Regional Military Manpower Administration, Seoul 16440, Republic of Korea