Affiliation: | 1. Chicago Medical School, Rosalind Franklin University, , North Chicago, Illinois;2. Rush Medical College, Rush University Medical Center, , Chicago, Illinois;3. Department of Pediatrics, Advocate Children's Hospital, Park Ridge, and the Lurie Children's Hospital, , Chicago, Illinois;4. Department of Otolaryngology, Advocate Children's Hospital, Park Ridge, and Rush University Medical Center, , Chicago, Illinois, U.S.A |