1. Department of Ophthalmology, California Pacific Medical Center, San Francisco, California, USA
2. 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, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
5. Department of Ophthalmology, Fattouma Bourguiba University Hospital, Faculty of Medicine, University of Monastir, Monastir, Tunisia
6. Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan
7. Ophthalmology Department, DHU View Maintain, Assistance Publique-Hôpitaux de Paris, Paris, France
8. Centre for Ophthalmology, University Tuebingen, Tuebingen, Germany