S R Ommen

Assessment of right atrial pressure with 2-dimensional and Doppler echocardiography: a simultaneous catheterization and echocardiographic study.

R A Nishimura, S. Ommen, R. Nishimura, 2000, Mayo Clinic proceedings.

A clinical approach to the assessment of left ventricular diastolic function by Doppler echocardiography: update 2003

R A Nishimura, S. Ommen, R. Nishimura, 2003, Heart.