1. Houston Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakeyVeterans Affairs Medical Center, Houston, TX, USA
2. Eye Care Line, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA
3. Department of Ophthalmology, Baylor College of Medicine, Houston, TX, USA
4. Division of Diabetes, Endocrinology and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E DeBakey Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA
5. Geriatric Research, Education and Clinical Center (GRECC), VA Puget Sound Health Care System, University of Washington, Seattle, WA, USA
6. Section of Health Services Research, Department of Medicine, Baylor College of Medicine, Houston, TX, USA