Intracranial hemorrhage among patients with atrial fibrillation anticoagulated with warfarin or rivaroxaban: the rivaroxaban once daily, oral, direct factor xa inhibition compared with vitamin k antagonism for prevention of stroke and embolism trial in atrial fibrillation

ROCKET AF Steering Committee and Investigators, Graeme J Hankey, Susanna R Stevens, Jonathan P Piccini, Yuliya Lokhnygina, Kenneth W Mahaffey, Jonathan L Halperin, Manesh R Patel, Günter Breithardt, Daniel E Singer, Richard C Becker, Scott D Berkowitz, John F Paolini, Christopher C Nessel, Werner Hacke, Keith A A Fox, Robert M Califf