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Cretin S, Keeler EB, Lynn J, Batalden PB, Berwick DM, Bisognano M, Cooper JA, Chernov AJ, Warburton SW, Hayley DC, al E. Should patients in quality-improvement activities have the same protections as participants in research studies? [4] (multiple letters). Journal of the American Medical Association. 2000;284(14):1786–1788.