1. College of Medicine, University of Oklahoma, Oklahoma City, OK, USA
2. Dean McGee Eye Institute, University of Oklahoma, Oklahoma City, OK, USA
3. Missouri Eye Institute, Springfield, MO, USA
4. Institute of Experimental Ophthalmology, Saarland University, Homburg, Germany
5. Department for Ophthalmology and Optometry, Kepler University Hospital, Linz, Austria
6. Institut für Refraktive und Ophthalmo-Chirurgie (IROC), Zurich, Switzerland