1. Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin.
2. Department of Otolaryngology/Head & Neck Surgery, Oregon Health Sciences University, Portland, Oregon.
3. Department of Otolaryngology & Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin.
4. Bristol-Myers Squibb, Princeton, New Jersey.
5. Schering-Plough, Kenilworth, New Jersey.