Clinic of Neurology, Marienhospital Kevelaer, Kevelaer, Germany;
Department of Neurology, Kreisklinikum Siegen, Siegen, Germany;
Department of Neurology, Philipps-University Marburg, Marburg, Germany;
Department of Neurology, Saxon Hospital Arnsdorf, Arnsdorf/Dresden, Germany;
Thrombin; Inhibitor; Factor; Xa; Inhibitor; Dabigatran; Rivaroxaban; Cerebral; Embolism; Atrial; Fibrillation;