1. University of Florida Department of Maxillofacial Surgery, Health Science Center Jacksonville, Jacksonville, Florida
2. University Medical Center. Jacksonville, Florida
3. Harvard School of Dental Medicine, Division of Oral and Maxillofacial Surgery, Children's Hospital, Cambridge, Massachusetts
4. Department of Surgery, Loma Linda University Medical Center, Loma Linda, California
5. Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, Massachusetts