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case 15) for ventricular septal defect with severe aortic incom- petence. In case 12 the surgery was undertaken else- 131 on July 16,
Brian G. Barratt‐Boyes (1964) studied this question. Homograft aortic valve replacement was utilized to treat patients with aortic incompetence and stenosis, including complex cases involving ventricular septal defects.
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