1. Department of Neurology; Centro Hospitalar São João; Porto Portugal
2. Neurology and Neurosurgery Unit of Clinical Neurosciences and Mental Health Department; Porto Portugal
3. Department of Ophthalmology; Centro Hospitalar São João; Porto Portugal
4. Ophthalmology Unit of Sense Organs Department; Faculty of Medicine University of Porto; Porto Portugal
5. Institute for Molecular and Cell Biology; University of Porto; Portugal