1. Hoopes Vision Research Center, Hoopes Vision, Draper, Utah, United States
2. John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, University of Utah School of Medicine, Salt Lake City, Utah, United States
3. Utah Lions Eye Bank, Murray, UT, USA
4. Georgetown University School of Medicine, Washington DC, USA
5. Mission Hills Eye Center
6. Zeimer Ophthalmic Systems AG, Port, Switzerland