1. Department of Otolaryngology-Head and Neck Surgery, McGaw Medical Center, Northwestern University-Chicago
2. Department of Otolaryngology-Head and Neck Surgery, Evanston Hospital-McGaw Medical Center for Northwestern University-Evanston
3. Department of Diagnostic Radiology, Evanston Hospital-McGaw Medical Center for Northwestern University-Evanston
4. Department of Pediatrics, Evanston Hospital-McGaw Medical Center for Northwestern University-Evanston