[1] Univ Florida, Molec Gen & Microbio, Gainesville, FL USA
[2] UCSF Sch Med, Beckman Vis Ctr, San Francisco, CA USA
[3] Univ Florida, Ophthalmol, Gainesville, FL USA
[4] Univ Florida, Coll Med, Dept Ophthalmol, Gainesville, FL 32610 USA
[5] Univ CA San Diego, Sch Med, Pathol, La Jolla, CA USA
[6] Univ Florida, Mol Genet & Microbio, Gainesville, FL USA