Additive prognostic value of a cardiopulmonary exercise test score in patients with heart failure and intermediate risk. (15th January 2015) - Ritt, Luiz E.; Myers, Jonathan; Stein, Ricardo; Arena, Ross; Guazzi, Marco; Chase, Paul; Bensimhon, Daniel; Ashley, Euan; Cahalin, Lawrence P.; Forman, Daniel E.