1. The 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. Associated Vitreoretinal and Uveitis Consultants, Indianapolis, Indiana, USA
5. The Department of Ophthalmology, Indiana University Medical Center, Indianapolis, Indiana, USA
6. St. Vincent Hospital and Health Services, Indianapolis, Indiana, USA
7. New England Eye Center, Tufts University School of Medicine, Boston, Massachusetts, USA
8. Centre for Ophthalmology, University Tuebingen, Tuebingen, Germany