Institution: | (1) Departments of Ophthalmology and Pathology, University of Texas Medical Branch, Galveston, Tex;(2) Department of Ophthalmology, American University of Beirut, Beirut, Lebanon;(3) Department of Pathology, University of Texas Medical Branch, Galveston, Tex;(4) Doheny Eye Foundation, University of Southern California, Los Angeles, Calif |