[1] Univ Nevada Reno Sch Med, Reno, NV USA
[2] Sierra Eye Associates, Reno, NV USA
[3] Univ Nevada Vegas Kirk Kerkorian Sch Med, Internal Med, Las Vegas, NV USA
[4] Univ Southern Calif, Los Angeles, CA USA
[5] Univ Missouri Sch Med, Ophthalmol, Columbia, MO USA
[6] Univ Arizona, Dept Ophthalmol & Vis Sci, Tucson, AZ USA
[7] UPMC, Pittsburgh, PA USA