“…In the most recent review of the literature Byron (1948) reports that of the 142 cases previously described 4 were suprathoracic or cervical, 81 were thoracic, 38 subthoracic or abdominal, 10 combined thoracoabdominal, and 9 unclassified. Blatt and Zeldes (1942), in an analysis of 53 cases, show that, of the three types of case, the cervical is incompatible with more than a few hours of life, and the abdominal has the greatest expectation of life (see Table).
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