1. Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health , Baltimore, MD , United States
2. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health , Baltimore, MD , United States
3. Olin Business School, Washington University in St. Louis , St. Louis, MO , United States
4. Department of Ophthalmology, Louisiana State University Health Sciences Center , New Orleans, LA , United States
5. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health , Baltimore, MD , United States