1. Division of Otorhinolaryngology–Head and Neck Surgery Ann & Robert H. Lurie Children's Hospital of Chicago Chicago Illinois U.S.A.
2. Department of Pathology and Laboratory Medicine Ann & Robert H. Lurie Children's Hospital of Chicago Chicago Illinois U.S.A.
3. Department of Medical Imaging Ann & Robert H. Lurie Children's Hospital of Chicago Chicago Illinois U.S.A.