1. Department of Neurology Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori Monza Italy
2. Department of Neurology Neurocenter of Southern Switzerland, Ente Ospedaliero Cantonale Lugano Switzerland
3. Department of Vascular Neurology, Faculty of Medicine University Medical Centre Ljubljana Ljubljana Slovenia
4. Stroke Unit Donostia University Hospital San Sebastian Spain
5. Department of Neuroradiology University Hospital Schleswig‐Holstein Lübeck Germany