1. Prevalence of valvular regurgitation by Doppler echocardiography in patients with structurally normal hearts by two-dimensional echocardiography;Choong;Am. Heart J.,1989
2. Pulsed Doppler regurgitant flow patterns of normal valves;Kostucki;Am. J. Cardiol.,1986
3. Colour flow Doppler echocardiography in normal horses;Blissit;Equine Vet. J.,1995
4. Physiological valvular regurgitation in clinically normal young racehorses: prevalence and two-dimensional colour flow Doppler echocardiographic characteristics;Marr;Equine Vet. J.,1995
5. Use of pulsedwave Doppler echocardiography to determine aortic and pulmonary velocity and flow variables in clinically normal dogs;Brown;Amer. J. Vet. Res.,1991