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BMJ 2000; 321 doi: https://doi.org/10.1136/bmj.321.7263.771/b (Published 23 September 2000) Cite this as: BMJ 2000;321:771
  1. Christopher Martyn (cmartyn@bmj.com)
  1. BMJ
    • Research ethics committees have attracted a good deal of criticism recently. Investigators trying to set up a multicentre study often find that the demands of individual committees are hard to reconcile. One committee may require that more information about the study should be given to participants, whereas another advises that they are likely to be confused by being told too much. But the issues that an ethics committee must consider are frequently difficult. And views about whether a placebo arm in a drug …

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