1. Burstow DJ, Nishimura RA, Bailey KR et al (1990) Continuous wave Doppler echocardiographic measurement of prosthetic valve gradients: a simultaneous Doppler-catheter correlative study. Circulation 82:1467–1475
2. Connolly HM, Miller FA Jr, Taylor CL et al (1993) Doppler hemodynamic profiles of 82 clinically and echocardiographically normal tricuspid valve prostheses. Circulation 88:2711–2717
3. Lengyel M, Miller F Jr, Taylor CL et al (1990) Doppler Hemodynamic profiles in 456 clinically and echo-normal mitral valve prostheses. Circulation 82(Suppl 3):3–43
4. Miller F Jr, Callahan J, Taylor C et al (1989) Normal aortic valve prosthesis hemodynamics: 609 prospective Doppler examinations. Circulation 80(Suppl 2):2–169
5. Novaro GM, Connolly HM, Miller FA (2001) Doppler hemodynamics of 51 clinically and echocardiographically normal pulmonary valve prostheses. Mayo Clin Proc 76:155–160