1. From the Department of Otolaryngology, American University of Beirut-Medical Center, Lebanon.
2. Present address: Department of Otolaryngology—Head and Neck Surgery, The Johns Hopkins Hospital, Baltimore, Md.
3. From the Department of Surgery, American University of Beirut-Medical Center, Lebanon.
4. Present address: Department of Surgery, Division of Plastic Surgery, St. Louis University Medical Center, St. Louis, Mo.