1. Department of Orthopaedic Surgery, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
2. Functional Materials R&D Group, Korea Dyeing and Finishing Technology Institute, Daegu, Republic of Korea
3. Department of Bio-fibers and Materials Science, College of Agriculture and Life Science, Kyungpook National University, Daegu, Republic of Korea
4. Department of Orthopaedic Surgery, School of Medicine, Konkuk University, Seoul, Republic of Korea