1. Johns Hopkins Community Physician, Baltimore, MD, USA
2. University of Maryland, School of Nursing, Baltimore, MD, USA
3. State University of New York at Stony Brook, School of Nursing, Brookhaven, NY, USA
4. Sollay Medical Center, Sollay Kenyan Foundation, Katani Hospital, Katani, Kenya
5. Schepens Eye Research Institute of Massachusetts Eye & Ear, Boston, MA, USA
6. Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
7. Department of Ophthalmology, Tufts University School of Medicine, MA, USA