Mueller U K, Sareli P, Essop M R
Division of Cardiology, Baragwanath Hospital, University of the Witwatersrand, Johannesburg, South Africa.
Am J Cardiol. 1998 Mar 1;81(5):656-9. doi: 10.1016/s0002-9149(97)00976-4.
Echocardiographic quantification of the severity of anterior mitral leaflet retraction aids prediction of severe mitral regurgitation after balloon valvuloplasty.