1. Geisel School of Medicine at Dartmouth Hanover New Hampshire USA
2. Section of Otolaryngology, Audiology & Maxillofacial Surgery, Department of Surgery Dartmouth‐Hitchcock Medical Center Lebanon New Hampshire USA
3. Department of Otolaryngology University of Michigan Hospitals and Health Centers Ann Arbor Michigan USA
4. University Health Care System Augusta Georgia
5. The Dartmouth Institute for Health Policy and Clinical Practice Lebanon New Hampshire USA