Doppler tissue imaging derived regional deformation indices of right ventricular function in primary pulmonary hypertension: a case-control matched study - Trifunovic, D; Athanassopoulos, G; Athanassios, M; Panagiotis, I; Karatasakis, G; Ostojic, M; Cokkinos, D.V. (EUROPEAN HEART JOURNAL, 2007)