[1] SUNY Downstate Med Ctr, Dept Otolaryngol, Brooklyn, NY 11201 USA
[2] Long Isl Coll Hosp, Brooklyn, NY 11201 USA
[3] Univ Wisconsin, Dept Med, Madison, WI USA
[4] Brigham & Womens Hosp, Dept Otolaryngol, Boston, MA 02115 USA
[5] Johns Hopkins Univ, Dept Emergency Med, Baltimore, MD USA
[6] United Healthcare, Edina, MN USA
[7] Univ Calif San Diego, Dept Family & Prevent Med, San Diego, CA 92103 USA
[8] CIGNA Healthcare, Hartford, CT USA
[9] Massachusetts Gen Hosp, Dept Med, Lexington, KY USA
[10] Univ Kentucky, Sch Med, Dept Otolaryngol, Atlanta, GA USA
[11] Emory Univ, Sch Med, Dept Radiol, Atlanta, GA 30322 USA
[12] Amer Acad Otolaryngol Head & Neck Surg Fdn, Alexandria, VA USA
[13] Wayne State Univ, Dept Nursing, Detroit, MI USA
[14] SUNY Buffalo, Sch Med & Biomed Sci, Buffalo, NY 14260 USA
[15] Univ Texas, SW Med Ctr, Dept Otolaryngol, Dallas, TX 75230 USA
[16] Wright Patterson USAF Med Ctr, Dept Pulm Med, Wright Patterson AFB, OH USA
[17] Univ Colorado, Hlth Sci Ctr, Dept Med, Denver, CO 80262 USA
[18] Yale Univ, Sch Med, Ctr Med Informat, New Haven, CT USA
[19] Oregon Hlth & Sci Univ, Dept Otolaryngol, Portland, OR 97201 USA
[20] Duke Univ, Sch Med, Div Otolaryngol, Durham, NC USA