title: [Advances in Doppler echocardiography].
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D004452:Echocardiography / Q000379:methods; D006330:Heart Defects, Congenital / Q000175:diagnosis; D006334:Heart Function Tests / Q000379:methods; D006349:Heart Valve Diseases / Q000175:diagnosis; D006801:Humans