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The most recent revision to the declaration of Helsinki is now available at http://www.wma.net/en/30publications/10policies/b3/
Also, 2 interesting and informative commentaries from the Journal of the American Medical Association are available at:
http://jama.jamanetwork.com/article.aspx?articleID=1760319&utm_source=Silverchair%20Information%20Systems&utm_medium=email&utm_campaign=JAMA%3AOnlineFirst10%2F19%2F2013
and
http://jama.jamanetwork.com/article.aspx?articleID=1760320&utm_source=Silverchair%20Information%20Systems&utm_medium=email&utm_campaign=JAMA%3AOnlineFirst10%2F19%2F2013