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- [5] A COMPARISON OF THE ASSESSMENT OF MITRAL-VALVE AREA BY CONTINUOUS WAVE DOPPLER AND BY CROSS-SECTIONAL ECHOCARDIOGRAPHY BRITISH HEART JOURNAL, 1987, 57 (04): : 348 - 355
- [7] ASSESSMENT BY CROSS-SECTIONAL ECHOCARDIOGRAPHY OF SURGICAL MITRAL-VALVE DISEASE IN CHILDREN AND ADOLESCENTS BRITISH HEART JOURNAL, 1986, 56 (03): : 267 - 271