1 Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland. Electronic address: tiarnan.keenan@nih.gov.
2 The Emmes Company LLC, Rockville, Maryland.
3 Division of Epidemiology and Clinical Applications, National Eye Institute, National Institutes of Health, Bethesda, Maryland.
4 Janssen Research and Development LLC, Raritan, New Jersey.