1. Department of Ophthalmology, California Pacific Medical Center, San Francisco, California, USA
2. The Department of Ophthalmology, Stanford University School of Medicine, Stanford, California, USA
3. The Francis I. Proctor Foundation, UCSF School of Medicine, San Francisco, California, USA
4. Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
5. Bern Photographic Reading Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
6. Department of Ophthalmology, Weill Cornell Medical College, NY, USA
7. Centre for Ophthalmology, University Tuebingen, Tuebingen, Germany