1. H Dunbar Hoskins, Jr MD Center for Quality Eye Care, Foundation of the American Academy of Ophthalmology, 655 Beach Street, San Francisco, CA 94109, USA
2. Jules Stein Eye Institute, David Geffen School of Medicine & Fielding School of Public Health, University of California, Los Angeles, CA 90095, USA
3. Massachusetts Eye & Ear Infirmary & Harvard Medical School, Boston, MA 02114, USA
4. Outcome DEcIDE Center, Quintiles Real World & Late Phase Research, 201 Broadway #5, Cambridge, MA 02139, USA