1. Columbia University College of Dental Medicine, New York, NY, USA
2. Department of Oral and Maxillofacial Surgery, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
3. Brockton Oral and Maxillofacial Surgery Inc., Brockton, MA, USA
4. Department of Oral and Maxillofacial Surgery, Good Samaritan Medical Center, Brockton, MA, USA
5. Department of Oral and Maxillofacial Surgery, School of Dentistry, Kaohsiung Medical University, Kaohsiung, Taiwan