[1] Columbia Univ Coll Phys & Surg, Ophthalmol, New York, NY 10032 USA
[2] Columbia Univ Coll Phys & Surg, Pathol & Cell Biol, New York, NY 10032 USA
[3] Manhattan Eye Ear & Throat Hosp, Ophthalmol, New York, NY 10021 USA
[4] NYU, Med Ctr, Ophthalmol, New York, NY 10016 USA