1. The University of Oklahoma College of Medicine, Oklahoma City, United States
2. Institute for refractive and ophthalmic surgery (IROC), Zürich, Switzerland
3. Department of Ophthalmology, Inselspital, Bern, Switzerland
4. Department of Ophthalmology, University Hospital Düsseldorf, Düsseldorf, Germany
5. Department of Ophthalmology, University of Oklahoma, Dean McGee Eye Institute, Oklahoma City, Oklahoma, United States
6. Great Lakes Eye Care, St. Joseph, Michigan, United States
7. Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan, United States
8. Institute of Experimental Ophthalmology, Saarland University, Homburg/Saar, Germany
9. Eye Day Clinic at the Spreebogen, Berlin, Germany
10. Department of Ophthalmology and Optometry, Kepler University Hospital, Linz, Austria
11. Department of Ophthalmology, Goethe-University, Frankfurt, Germany