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| United States, Maryland | |||||
| Wilmer Eye Institute | |||||
| Baltimore, Maryland, United States, 21287-9028 | |||||
| United States, Pennsylvania | |||||
| Children's Hospital of Pittsburgh | |||||
| Pittsburgh, Pennsylvania, United States, 15213 | |||||
| Pennsylvania College of Optometry | |||||
| Philadelphia, Pennsylvania, United States, 19141 | |||||
| Study Chair: | Richard W. Hertle, M.D. | Children's Hospital of Pittsburgh |
| Study Chair: | Mitchell M. Scheiman, O.D. | Pennsylvania College of Optometry |