title: Stress Doppler echocardiography in valvular heart diseases: utility and assessment.
authors.affiliation: University of Li&#x00E8;ge, Department of Cardiology, CHU Sart Tilman, Li&#x00E8;ge, 4000, Belgium.
authors.forename: Kim
authors.initials: K
authors.lastname: O'Connor
authors.forename: Patrizio
authors.initials: P
authors.lastname: Lancellotti
authors.forename: Luc A
authors.initials: LA
authors.lastname: Piérard