1 Kaiser Permanente Northern California (C.B.S.), San Francisco, California, USA.
2 Francis I. Proctor Foundation, University of California San Francisco (J.S, T.D, J.A.G.), San Francisco, California, USA.; Department of Ophthalmology, University of California San Francisco (J.S., T.D., J.A.G.), San Francisco, California, USA.
3 Sharp-Rees-Stealy and Rady Childrens Hospital (J.L.), San Diego, California, USA.
4 Kaiser Permanente Northern California (Y.Q.), Oakland, California, USA.
5 Francis I. Proctor Foundation, University of California San Francisco (J.S, T.D, J.A.G.), San Francisco, California, USA.; Department of Ophthalmology, University of California San Francisco (J.S., T.D., J.A.G.), San Francisco, California, USA.. Electronic address: john.gonzales@ucsf.edu.