1. Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland , USA
2. Department of Ophthalmology, Louisiana State University Health Sciences Center , New Orleans, Louisiana , USA
3. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland , USA
4. John A. Burns School of Medicine, University of Hawai’i at Mānoa , Honolulu, Hawai’i , USA
5. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland , USA