Effect of balloon valvuloplasty in patients with severe aortic stenosis on levels of N-terminal pro-B-type natriuretic peptide - Spargias, Konstantinos; Alexopoulos, Elias; Thomopoulou, Sofia; Dimopoulos, Antonis; Manginas, Athanasios; Pavlides, Gregory; Voudris, Vassilis; Karatassakis, George; Athanassopoulos, George; Cokkinos, Dennis V (The American journal of cardiology, 2009)