1. Program in Liberal Medical Education, Brown University, Providence, Rhode Island
2. Division of Ophthalmology, Warren Alpert Medical School, Brown University, Providence, Rhode Island
3. Division of Ophthalmology, Rhode Island Hospital, Providence
4. Department of Ophthalmology, Penn State College of Medicine, Hershey, Pennsylvania
5. Department of Public Health Sciences, Penn State College of Medicine, Hershey, Pennsylvania
6. Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester
7. Section of Ophthalmology, Providence Veterans Affairs Medical Center, Providence, Rhode Island