1 Karl Landsteiner Institute for Neuroimmunological and Neurodegenerative Disorders, Vienna, Austria; Department of Neurology, SMZ-Ost Donauspital, Vienna A-1220, Austria. Electronic address: fahmy.aboulenein@meduniwien.ac.at.
2 Department of Ophthalmology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
3 Karl Landsteiner Institute for Neuroimmunological and Neurodegenerative Disorders, Vienna, Austria.