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In the item entitled "Physicians Sign Up for Hospital Plan" in the Washington Letter in The Journal, November 22, page 779, the term "the new Group Hospitalization Insurance plan" was erroneous and should have been "Medical Service of the District of Columbia."
Medical Service of the District of Columbia. JAMA. 1947;135(15):1018. doi:10.1001/jama.1947.02890150062017