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Guidelines from different medical societies are available on this subject: 2011 NICE guidelines: https://www.nice.org.uk/guidance/cg126 2012 ACCF/AHA/ACP/AATS/PCNA/SCAI/STS Guideline : http://content.onlinejacc.org/article.aspx?articleid=1391404 2013 ESC guidelines: http://eurheartj.oxfordjournals.org/content/ehj/early/2013/08/28/eurheartj.eht296.full.pdf ...


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