1. Pediatric Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
2. Pediatric Anesthesiology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
3. Pediatric Critical Care, Massachusetts General Hospital, Boston, Massachusetts, USA
4. Pediatric Otolaryngology, Yale-New Haven Hospital, New Haven, Connecticut, USA
5. Pediatric Otolaryngology, Brook Army Medical Center, San Antonio, Texas, USA
6. Speech-Language Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA
7. Surgery, Metropolitan Hospital, Quito, Ecuador