1. From the Multi-Disciplinary Laboratory for the Research of Sight-Threatening Diabetic Retinopathy, Department of Ophthalmology and Vision Science, and the2School of Optometry, University of Waterloo, Waterloo, Ontario, Canada.
2. Department of Endocrinology, University of Toronto, Toronto, Ontario, Canada; and the
3. From the Multi-Disciplinary Laboratory for the Research of Sight-Threatening Diabetic Retinopathy, Department of Ophthalmology and Vision Science, and the