1. Department of Biomaterials Engineering, Kangwon National University, Chuncheon 200-701, Republic of Korea
2. Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, North Carolina 27709, United States
3. King Abdulaziz University, Jeddah, Saudi Arabia
4. Institute of Bioscience and Bioengineering, Kangwon National University, Chuncheon 200-701, Republic of Korea