1. Department of Otolaryngology—Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
2. Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
3. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
4. Monroe Carell Jr. Children’s Hospital, Vanderbilt University Medical Center, Nashville, TN 37232, USA