[Relative value of attenuation and negativation of systolic pulmonary venous flow in severe mitral insufficiency. Transesophageal echocardiographic study]. - Abdelkhirane C; Roudaut R; Koch M; Barbeau P; Durandet P; Gosse P; Lehérissier A; Billès MA; Dallocchio M (Archives des maladies du coeur et des vaisseaux, 1992)