1. Center for Surgery and Public Health, Harvard Medical School and Harvard T. H. Chan School of Public Health, Department of Surgery, Brigham & Women’s Hospital, Boston, Massachusetts, USA
2. Massachusetts Eye and Ear Infirmary, Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts, USA
3. Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
4. Armstrong Institute for Patient Safety and Quality, Johns Hopkins Medicine, Baltimore, Maryland, USA