[1] Emory Univ, Neurosci, Atlanta, GA 30322 USA
[2] Emory Univ, Ophthalmol, Atlanta, GA 30322 USA
[3] Emory Univ, Atlanta, GA 30322 USA
[4] Emory Univ, Pharmacol, Atlanta, GA 30322 USA
[5] Georgia Inst Technol, Biomed Engn, Atlanta, GA 30332 USA
[6] Atlanta Vet Affairs Med Ctr, Atlanta, GA USA