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In the SPECIAL COMMUNICATION, "Transtracheal Ventilation," published in the Dec 15, 1975, issue (234:1152-1153), the graph (p 1153) contained an error. The bottom curve (dashed line, with points marked by x's) should have been labeled "16-gauge Intracatheter," not extracatheter, as printed.
Mislabeled Graph. JAMA. 1976;236(5):449. doi:10.1001/jama.1976.03270050013017