N. Ferahta, L. K. Kanagaratnam, M. Dramé, T. Vogel, P.-J. Ambrosi, and P.-O. Lang, “Bleeding Risk under Oral Factor Xa Inhibitors: Meta-analysis of the randomized comparison with Vitamin K Antagonists and Meta-Regression analysis”, J Cardiovasc Med Cardiol, vol. 4, no. 3, pp. 038–048, Jul. 2017.