1. Department of Ophthalmology, RWTH Aachen University, Aachen, Germany
2. Department of Ophthalmology, Karlsruhe Memorial Hospital, Karlsruhe, Germany
3. Center for Retinitis Pigmentosa of Veneto Region, Camposampiero Hospital, Padova, Italy
4. Department of Vitreo-retinal Surgery, Center of Ophthalmology, University of Cologne, Cologne, Germany
5. University Eye Clinic, University Hospital Schleswig-Holstein, University of Luebeck, Luebeck, Germany
6. Department of Ophthalmology, Leipzig University, Leipzig, Germany
7. Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach/Saar, Germany
8. University Eye Hospital, Hamburg, Germany
9. Second Sight Medical Products Inc, Sylmar, California
10. Alfred Mann Foundation for Scientific Research, Valencia, California
11. Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
12. Department of Neuroscience, University of Florence, Florence, Italy
13. Department of Ophthalmology, Careggi University Hospital, Florence, Italy