1. Department of Otolaryngology–Head and Neck SurgeryWalter Reed National Military Medical CenterBethesdaMarylandUSA
2. Department of RadiologyUniformed Services UniversityBethesdaMarylandUSA
3. Department of RadiologyWalter Reed National Military Medical CenterBethesdaMarylandUSA
4. Department of SurgeryUniformed Services UniversityBethesdaMarylandUSA