1. Columbia University College of Dental Medicine New York City New York USA
2. University of Miami Miller School of Medicine Miami Florida USA
3. Harvard School of Dental Medicine Boston Massachusetts USA
4. Department of Oral and Maxillofacial Surgery, School of Dental Medicine University of Pennsylvania Philadelphia Pennsylvania USA
5. Department of Oral and Maxillofacial Surgery Good Samaritan Medical Center Brockton Massachusetts USA
6. Department of Oral and Maxillofacial Surgery, School of Dentistry Kaohsiung Medical University Kaohsiung Taiwan