Efficacy and safety of apixaban compared with warfarin according to patient risk of stroke and of bleeding in atrial fibrillation: a secondary analysis of a randomised controlled trial.

Lopes, R. D.; Al Khatib, S. M.; Wallentin, L.; Yang, H.; Ansell, J.; Bahit, M. C.; DE CATERINA, Raffaele; Dorian, P.; Easton, J. D.; Erol, C.; Ezekowitz, J. A.; Gersh, B. J.; Granger, C. B.; Hohnloser, S. H.; Horowitz, J.; Hylek, E. M.; Mcmurray, J. J.; Mohan, P.; Vinereanu, D.; Alexander, J. H.