Tobias Kurth1, Jessica L Rohmann1,2, Robert E Shapiro3. 1. Institute of Public Health, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany. 2. Center for Stroke Research, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany. 3. Department of Neurological Sciences, Larner College of Medicine at the University of Vermont, Burlington, VT, USA.