1. Department of Biomedical Engineering, College of Health Science, Korea University, Seoul, Korea
2. Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI, USA
3. Department of Chemistry, College of Advanced Science, Dankook University, Cheonan, Korea
4. Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI, USA
5. Department of Orthopedic Surgery, Korea University Anam Hospital, Seoul, Korea