1 Department of Neurology, Medical University of Vienna, Vienna, Austria tobias.monschein@meduniwien.ac.at hans-peter.hartung@uni-duesseldorf.de.
2 Department of Neurology, Universitätsklinikum Düsseldorf, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany.
3 Department of Neurology, Medical University of Vienna, Vienna, Austria.
4 Brain and Mind Centre, The University of Sydney, Sydney, New South Wales, Australia.
5 Department of Neurology, Neuroimmunological Section, University of Rostock, Rostock, Germany.
6 Department of Neuroinflammation, Queen Square Multiple Sclerosis Centre, University College London (UCL) Queen Square Institute of Neurology, Faculty of Brain Sciences, UCL; National Institute for Health Research, University College London Hospitals, Biomedical Research Centre, London, UK.
7 Department of Neurology, Center for Neuroinflammation and Experimental Therapeutics, and Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.