[1] Univ Tennessee, Dept Otolaryngol Head & Neck Surg, Hlth Sci Ctr, 910 Madison Ave,Suite 408, Memphis, TN 38163 USA
[2] ENT Associates, 3455 Regency Pk Dr, Grand Blanc, MI 48439 USA
[3] Johns Hopkins Univ, Dept Otolaryngol Head & Neck Surg, Sch Med, 601 North Caroline St,6th Floor, Baltimore, MD 21287 USA