1. Stroke Center and Department of Neurology, University Hospital Basel and University of Basel, Basel, Switzerland
2. Neurorehabilitation Unit, University of Basel and University Center for Medicine of Aging and Rehabilitation, Felix Platter Hospital, Basel, Switzerland
3. Stroke Research Group, Department of Brain Repair & Rehabilitation, UCL Institute of Neurology, London, UK
4. Department of Medical Statistics, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK