![Mechanisms of increase in mitral valve area and influence of anatomic features in double-balloon, catheter balloon valvuloplasty in adults with rheumatic mitral stenosis: a Doppler and two-dimensional echocardiographic study]()
Mechanisms of increase in mitral valve area and influence of anatomic features in double-balloon, catheter balloon valvuloplasty in adults with rheumatic mitral stenosis: a Doppler and two-dimensional echocardiographic studyReid, C. L.; McKay, C. R.; Chandraratna, P. A.; Kawanishi, D. T.; Rahimtoola, S. H. · Circulation · 1987