Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, PittsburghPennsylvania, 15261, USA. rvb5@pitt.edu.|Department of Health Promotion and Development, School of Nursing, University of Pittsburgh, Pittsburgh, Pennsylvania, 15261, USA. yconley@pitt.edu.|Department of Ophthalmology, David Geffen School of Medicine, Stein Eye Institute, University of California Los Angeles, Los Angeles, California, 90095, USA. gorin@jsei.ucla.edu.|Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, PittsburghPennsylvania, 15261, USA. weeks@pitt.edu.