Retention of the Right Dorsal Aortic Segment Yields a Right Aortic Arch
Regression of the Right Fourth Arch Results in an Aberrant Right Subclavian Artery
Obliteration of the Right and Left Fourth Aortic Arches Leads to Interruption of the
Failure of Regression of the Right Dorsal Aorta Leads to a Double Aortic Arch
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