[1] Johns Hopkins Univ, Sch Med, Dept Otolaryngol Head & Neck Surg, Baltimore, MD 21205 USA
[2] Emory Univ Hosp, 1364 Clifton Rd NE, Atlanta, GA 30322 USA
[3] Consumers United Evidence Based Healthcare CUE, Baltimore, MD USA
[4] Amer Acad Otolaryngol Head & Neck Surg Fdn, Alexandria, VA USA