1. Ulverscroft Eye Unit, Neuroscience, Psychology and Behaviour, Robert Kilpatrick Clinical Sciences Building, Leicester Royal Infirmary, University of Leicester, United Kingdom
2. Molecular Genetics Laboratory, Institute for Ophthalmic Research, Department for Ophthalmology, University of Tübingen, Tübingen, Germany
3. Department of Neurology, Cooper University Hospital, Cooper Neurological Institute, Cooper Medical School of Rowan University, Camden, New Jersey, United States