Affiliation: | 1. Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn;2. Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tenn;3. Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn;4. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tenn |