1. University of Maryland School of Medicine, Baltimore, Maryland;
2. Baltimore VA Medical Center, Baltimore, Maryland;
3. Health Sciences and Human Services Library, University of Maryland–Baltimore, Baltimore, Maryland;
4. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, Illinois;
5. Retinal Circuits Development and Genetics Unit, National Eye Institute, Bethesda, Maryland; and
6. Faculty of Medicine, Research and Development Institute, Transilvania University of Brașov, Brașov, Romania