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Page last updated at 07:59 GMT, Tuesday, 25 August 2009 08:59 UK

Propofol 'is incredibly potent'

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Dangerous levels of the anaesthetic propofol was found in Michael Jackson's body when he died, coroner's office documents show. Dr Andrew Hartle, a consultant anaesthetist at Imperial College Healthcare Trust, explains why someone might use such a powerful anaesthetic.

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