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- Restricted accessExercise echocardiographyStephen N. Berberich and James R.S. Zager
- Restricted accessDoppler echocardiographic appearance of cusp tears in tissue valve prosthesesRichard Meltzer
- Restricted accessSpontaneous echocardiographic contrast and hepatic congestionT.L. Hsu, B.N. Chiang, et al.