DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Lindroos M, Kupari M, Heikkila J et al.
Prevalence of aortic valve abnormalities in the elderly: an echocardiographic study of a random population sample.
J Am Coll Cardiol 1993;
21: 1200-1205
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