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In the article by Dr. Gordon Murray entitled "Heparin in Surgical Treatment of Blood Vessels," in the February issue (Arch. Surg.40:307, 1940) the name "Labey" should be substituted for "Key" in the second line on page 312, and footnote 4 should begin "Labey, cited by Key:".
CORRECTION. Arch Surg. 1940;40(4):820. doi:10.1001/archsurg.1940.04080030238012