Kotecha, Dipak, Holmes, Jane, Krum, Henry, Altman, Douglas G., Manzano, Luis, Cleland, John G.F., Lip, Gregory Y.H., Coats, Andrew J.S., Andersson, Bert, Kirchhof, Paulus, Von Lueder, Thomas G., Wedel, Hans, Rosano, Giuseppe, Shibata, Marcelo C., Rigby, Alan, Flather, Marcus D., "Efficacy of β blockers in patients with heart failure plus atrial fibrillation: An individual-patient data meta-analysis", The Lancet, 2014