The boss of the NHS, Sir David Nicholson, has previously told ITV News that he is "not ashamed" that he is still in the job despite the revelations about Stafford Hospital.
Sir David was chief executive of the West Midlands Strategic Health Authority between 2005 and 2006, which was responsible for setting targets for hospitals in Mid-Staffordshire.
He told ITV News presenter Mark Austin he was not aware of abuses at Stafford Hospital at the time:
Campaigners seeking accountability for the abuses outlines in the Francis Report will today call for Sir David to resign.
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