1. Department of Periodontology and Dental Research Institute; Translational Research Laboratory for Tissue Engineering (TTE); School of Dentistry; Seoul National University; Seoul Korea
2. Department of Oral Surgery; Universitätsklinikum Düsseldorf; Düsseldorf Germany
3. Department of Dental Laboratory Science and Engineering; College of Health Science; Korea University; Seoul Korea
4. Laboratory for Applied Periodontal & Craniofacial Regeneration (LAPCR); Dental College of Georgia; Augusta University; Augusta GA USA