1. Department of Ophthalmology, Stadtspital Zurich, 8063 Zurich, Switzerland
2. Werner H. Spross Foundation for the Advancement of Research and Teaching in Ophthalmology, 8063 Zurich, Switzerland
3. Department of Ophthalmology, Semmelweis University, 1085 Budapest, Hungary
4. Department of Ophthalmology, Inselspital, University Hospital Bern, 3010 Bern, Switzerland
5. Helvetia Retina Associates, 1005 Lausanne, Switzerland
6. New York Eye and Ear Infirmary of Mt Sinai, Icahn School of Medicine, New York, NY 10029, USA
7. Department of Ophthalmology, University of Heidelberg, 69117 Heidelberg, Germany