Duration of Implantable Cardiac Monitoring and Detection of Atrial Fibrillation in Ischemic Stroke Patients: A Systematic Review and Meta-Analysis Autor Georgios Tsivgoulis, Aristeidis H. Katsanos, Martin Köhrmann, Valeria Caso, Fabienne Perren, Lina Palaiodimou, Spyridon Deftereos, Sotirios Giannopoulos, John Ellul, Christos Krogias, Dimitris Mavridis, Sokratis Triantafyllou, Anne W. Alexandrov, Peter D. Schellinger, Andrei V. Alexandrov