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In the article by Dr. M. M. Wintrobe in the February issue (Arch. Int. Med.57:289, 1936), on page 293, line 10, "inversely proportional to the degree of anemia" should read "inversely proportional to the number of red cells."
CORRECTION. Arch Intern Med (Chic). 1936;57(4):836. doi:10.1001/archinte.1936.00170080190022