1. Department of Otolaryngology—Head and Neck Surgery University of Texas Southwestern Medical Center Dallas Texas U.S.A.
2. Dental and Craniofacial Trauma Research Department U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston San Antonio Texas U.S.A.
3. Department of Otolaryngology Cleveland Clinic Florida Coral Springs Florida U.S.A.
4. Ohio ENT and Allergy Physicians Columbus Ohio U.S.A.
5. Department of Otolaryngology University of Alabama at Birmingham Birmingham Alabama U.S.A.