1 Harvard Medical School, Department of Global Health and Social Medicine, Program in Global Surgery and Social Change, Boston, MA 02138, USA; Harvard Medical School, Department of Otology and Laryngology, Boston, MA, USA; Massachusetts Eye and Ear Infirmary, Office of Global Surgery, Boston, MA, USA. Electronic address: shrime@mail.harvard.edu.
2 Division of Pediatric Surgery, Rady Children's Hospital, Department of Surgery, University of California-San Diego, San Diego, CA, USA.
3 Harvard Medical School, Department of Otology and Laryngology, Boston, MA, USA; Massachusetts Eye and Ear Infirmary, Office of Global Surgery, Boston, MA, USA.
4 Departments of Surgery, Global Health, and Epidemiology, University of Washington, Seattle, WA, USA.