1. Halifax Medical Center, Daytona Beach, Fla.
2. Department of Otolaryngology, University of South Florida College of Medicine, Tampa
3. Southern New England Ear, Nose, Throat, and Facial Plastic Surgery Group, New Haven, Conn.; the Section of Otolaryngology, Hospital of St. Raphael, New Haven; and the Section of Otolaryngology, Yale University School of Medicine, New Haven.