Left Ventricular Systolic Dysfunction Associated With Pulmonary Hypertension Riociguat Trial Study G. Riociguat for patients with pulmonary hypertension caused by systolic left ventricular dysfunction: a phase IIb double-blind, randomized, placebo-controlled, dose-ranging hemodynamic study - Bonderman, D; Ghio, S; Felix, S B (Circulation, 2013)
et al.