1. Department of Otolaryngology-Head and Neck Surgery; University of Iowa Carver College of Medicine; Iowa City IA
2. Department of Otolaryngology-Head and Neck Surgery; University of Virginia School of Medicine; Charlottesville VA
3. Holden Comprehensive Cancer Center; University of Iowa Hospitals and Clinics; Iowa City IA
4. Department of Internal Medicine; Division of Immunology; University of Iowa Carver College of Medicine; Iowa City IA
5. Iowa City Veterans Affairs Health Care Center; Iowa City IA