1. The Ohio State University College of Optometry, Columbus, Ohio, United States
2. Southern California College of Optometry at Marshall B. Ketchum University, Fullerton, California, United States
3. School of Optometry, University of Alabama, Birmingham, Birmingham, Alabama, United States
4. University of Houston College of Optometry, Houston, Texas, United States
5. University of Arizona Department of Ophthalmology and Vision Science, Tucson, Arizona, United States