Published in

BMJ Publishing Group, BMJ, 7434(328), p. 282-285, 2004

DOI: 10.1136/bmj.328.7434.282

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Evaluating the health effects of social interventions

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Is no evidence better than any evidence when controlled studies are unethical?