Primary Care

Recruiting patients to medical research: double blind randomised trial of "opt-in" versus "opt-out" strategies

BMJ 2005; doi: https://doi.org/10.1136/bmj.38583.625613.AE (Published 12 September 2005) Cite this as: BMJ 2005;:bmj;bmj.38583.625613.AEv1

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