1 Department of Otolaryngology/Head and Neck Surgery, Louisiana State University Health Sciences Center & Feist-Weiller Cancer Center, Shreveport, Louisiana, U.S.A.
2 Department of Surgery, Otolaryngology Section, Overton Brooks Veterans Affairs Medical Center (OBVAMC), Shreveport, Louisiana, U.S.A.
3 Department of Otolaryngology Head and Neck Surgery, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, U.S.A.