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Funding Funding for this research was from That Man May See and the South Asia Research Fund. NRA is supported by a National Eye Institute K23EY017897 grant and a Research to Prevent Blindness Career Development Award. TML is supported by a National Eye Institute grant U10-EY015114 and a Research to Prevent Blindness award.
Competing interests None.
Ethics approval Ethical approval was obtained from the University of California, San Francisco and the Aravind Eye Care System.
Provenance and peer review Not commissioned; internally peer reviewed.
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