1. Chicago Medical School, Rosalind Franklin UniversityNorth Chicago Illinois
2. Rush Medical CollegeRush University Medical CenterChicago Illinois
3. Department of PediatricsAdvocate Children's Hospital, Park Ridge, and the Lurie Children's HospitalChicago Illinois
4. Department of OtolaryngologyAdvocate Children's Hospital, Park Ridge, and Rush University Medical CenterChicago Illinois U.S.A