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The following Letters to the Editors from Alimentary Pharmacology & Therapeutics: ‘Re: Ethics of administering gatifloxacin for H. pylori infection in asymptomatic Veterans’ by D. Vaira, A. Zullo, V. de Francesco, G. Scaccianoce, C. Hassan, E. Ierardi & S. Morini (doi: 10.1111/j.1365-2036.2008.03602.x; accepted article published OnlineAccepted 10 January 2008) and ‘Ethical issues regarding recent anti-H. pylori clinical studies’ by D. Y. Graham (doi: 10.1111/j.1365-2036.2008.03603.x; accepted article published OnlineAccepted 10 January 2008); have been retracted by the agreement of the journal Editors (R. E. Pounder, W. L. Peterson, J. M. Rhodes and P. Martin) and Blackwell Publishing Ltd.