1. Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31115, Republic of Korea
2. Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31115, Republic of Korea
3. Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31115, Republic of Korea