β-blockade with nebivolol for prevention of acute ischaemic events in elderly patients with heart failure oleh G. Ambrosio, M. D. Flather, M. Böhm, A. J.S. Coats, L. Tavazzi, D. J. van Veldhuisen, M. G. Conti, G. Spinucci, F. Mascagni, A. Murrone, A. Cohen-Solal