1. Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
2. University of Florida College of Medicine, Jacksonville, Florida, USA
3. Department of Human and Molecular Genetics, Division of Clinical Genetics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
4. Department of Ophthalmology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
5. Department of Neurology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
6. Department of Pediatrics, Virginia Commonwealth University School of Medicine, Children’s Hospital of Richmond at VCU, Richmond, Virginia, USA