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The accompanying explanatory diagrams, which were received too late to be published with the article, are to be appended to Figure 1 of "Pericardial Tamponade," by Drs. Conger Williams and Lamar Soutter (October issue, page 574).
CORRECTION. AMA Arch Intern Med. 1954;94(5):865. doi:10.1001/archinte.1954.00250050179019