1. Memphis, Tennessee, Philadelphia, Pennsylvania, and Ratchaburi, Thailand
2. Department of Otolaryngology–Head and Neck Surgery, University of Tennessee School of Medicine, Memphis, TN; Department of Otorhinolaryngology–Head and Neck Surgery, University of Pennsylvania School of Medicine, Philadelphia, PA; and Department of Otorhinolaryngology, Ratchaburi Hospital, Ratchaburi, Thailand