1. Department of Otolaryngology–Head and Neck Surgery Stanford University Palo Alto California
2. Department of Gastroenterology and Hepatology Stanford University Palo Alto California
3. NYU Division of Gastroenterology and Hepatology NYU Langone Health New York New York
4. Department of Gastroenterology and Hepatology and Speech Pathology St. George Hospital and University of New South Wales Sydney New South Wales Australia
5. Section of Otolaryngology–Head and Neck Surgery, Department of Surgery University of Calgary Calgary Alberta Canada