[1] Northwestern McGraw Med Ctr, Dept Otolaryngol Head & Neck Surg, Chicago, IL USA
[2] Univ Cincinnati, Coll Med, Dept Otolaryngol Head & Neck Surg, Cincinnati, OH USA
[3] Texas Tech Univ, Hlth Sci Ctr, Dept Otolaryngol Head & Neck Surg, Lubbock, TX USA
[4] Northwestern Mem Hosp, Dept Otolaryngol Head & Neck Surg, Div Facial Plast & Reconstruct Surg, 675 North St Clair St,Galter Pavil,15th Floor, Chicago, IL 60611 USA