1. Department of Ophthalmology; Department of Clinical Research; Inselspital; Bern University Hospital; University of Bern; Bern Switzerland
2. Bern Photographic Reading Center; University Hospital Bern; Bern Switzerland
3. Department of Ophthalmology; Feinberg School of Medicine; Northwestern University; Chicago Illinois USA
4. Center for Medical Physics and Biomedical Engineering; Medical University of Vienna; Vienna Austria