1. Vance Thompson Vision, Sioux Falls, SD, USA
2. University of South Dakota, Sanford School of Medicine, Sioux Falls, SD, USA
3. Hoopes, Durrie, Rivera Research, Hoopes Vision, Draper, UT, USA
4. Eye Doctors of Washington, Washington, DC, USA
5. Virginia Eye Consultants, Norfolk, VA, USA
6. Novartis Pharmaceuticals Corp., East Hanover, NJ, USA
7. Novartis Institute of Biomedical Research, Cambridge, MA, USA