1. Aerodigestive and Esophageal Center, Division of Speech-Language Pathology, Cincinnati Children's Hospital Medical Center, OH
2. Department of Surgery, Ann & Robert H. Lurie Children's Hospital of Chicago, IL
3. Departments of Otolaryngology—Head and Neck Surgery and Medical Education, Northwestern University Feinberg School of Medicine, Chicago, IL
4. Department of Otolaryngology, Boston University School of Medicine, MA