FDA bans blood donation by people who have lived in UK.
Gottlieb
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D001803:Blood Transfusion / Q000331:legislation & jurisprudence*; D007562:Creutzfeldt-Jakob Syndrome / Q000517:prevention & control / Q000635:transmission; D006801:Humans; D006113:United Kingdom; D014481:United States; D014486:United States Food and Drug Administration