1 Keck School of Medicine of the University of Southern California, Los Angeles, California.
2 University of Southern California Roski Eye Institute, Los Angeles, California.
3 University of Southern California Roski Eye Institute, Los Angeles, California; Department of Ophthalmology at University of Sao Paulo, Sao Paulo, Brazil; Department of Ophthalmology at Federal University of Rio de Janeiro, Sao Paulo, Brazil.
4 Keck School of Medicine of the University of Southern California, Los Angeles, California; University of Southern California Roski Eye Institute, Los Angeles, California. Electronic address: randlema@usc.edu.