1. Department of Otolaryngology; University of Colorado, School of Medicine; Aurora Colorado
2. Department of Surgery; Division of Otolaryngology; University of Wisconsin-Madison, School of Medicine and Public Health; Madison Wisconsin
3. Department of Family Medicine; University of Nebraska Medical Center; Omaha Nebraska
4. Department of Surgery; Division of Audiology; University of Wisconsin-Madison, School of Medicine and Public Health; Madison Wisconsin
5. University of Wisconsin-Madison, School of Medicine and Public Health; Madison Wisconsin U.S.A.