1. Department of Otolaryngology–Head and Neck Surgery Washington University School of Medicine St. Louis Missouri U.S.A.
2. Division of Public Health Sciences, Department of Surgery Washington University School of Medicine St. Louis Missouri U.S.A.
3. Department of Genetics Washington University School of Medicine St. Louis Missouri U.S.A.
4. Bernard Becker Medical Library Washington University School of Medicine St. Louis Missouri U.S.A.