Echo Doppler Predictors of Pulmonary Artery Hypertension in Patients with Systemic Sclerosis. - Frea, Simone; Capriolo, Michele; Marra, Walter Grosso; Cannillo, Margherita; Fusaro, Enrico; Libertucci, Daniela; Morello, Mara; Gaita, Fiorenzo (Echocardiography, 2011)