1. Department of PeriodontologyResearch Institute of Periodontal RegenerationYonsei University College of Dentistry Seoul Republic of Korea
2. Department of Oral BiologySchool of DentistryMedical University of Vienna Vienna Austria
3. Department of Applied Life ScienceBK21 PLUS ProjectYonsei University College of Dentistry Seoul Republic of Korea
4. Department of Mechanical EngineeringCollege of EngineeringYonsei University Seoul Republic of Korea