Comparative effectiveness of acenocoumarol and low-dose dabigatran in patients with atrial fibrillation and recent ischemic stroke in everyday clinical practice Konstantinos Tziomalos, Vasilios Giampatzis, Stella D. Bouziana, Marianna Spanou, Stavroula Kostaki, Maria Papadopoulou, Stella-Maria Angelopoulou, Filitsa Konstantara, Christos Savopoulos, Apostolos I. Hatzitolios