1. Department of Otolaryngology, San Antonio Military Medical Center, Ft Sam Houston, Texas
2. Department of Pathobiology, 59th Clinical Research Division, Lackland Air Force Base, Texas
3. Department of Pathology, San Antonio Military Medical Center, Ft Sam Houston, Texas
4. Department of Otolaryngology, Lakenheath Air Force Base, England
5. Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts
6. Department of Otolaryngology, San Antonio Military Medical Center, Ft Sam Houston, Texas6Uniformed Services University of the Health Sciences, Bethesda, Maryland