1 Department of Otorhinolaryngology, Head and Neck Surgery, University of Pennsylvania, Perelman School of Medicine, Philadelphia.
2 Stanford University School of Medicine, Stanford University, Stanford, Calif.
3 Department of Otorhinolaryngology, Head and Neck Surgery, University of Pennsylvania, Perelman School of Medicine, Philadelphia. Electronic address: Karthik.rajasekaran@pennmedicine.upenn.edu.