Efficacy and safety of apixaban compared with warfarin according to age for stroke prevention in atrial fibrillation: observations from the ARISTOTLE trial

Halvorsen, S.; Atar, D.; Yang, H.; DE CATERINA, Raffaele; Erol, C.; Garcia, D.; Granger, C. B.; Hanna, M.; Held, C.; Husted, S.; Hylek, E. M.; Jansky, P.; Lopes, R. D.; Ruzyllo, W.; Thomas, L.; Wallentin, L.