1. From the Schepens Eye Research Institute, and the2Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts; the
2. From the Schepens Eye Research Institute, and the
3. Department of Physics, University of Massachusetts, Boston, Massachusetts; and the
4. From the Schepens Eye Research Institute, and the4Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts.