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This is one of a series of BMJ summaries of new guidelines, which are
based on the best available evidence; they highlight important
recommendations for clinical practice, especially where uncertainty or
Guideline development group: Mohamed Abuzakouk, Sorrel Burden, Peter
Howdle (chair), Alison Lister, Peter Macfarlane, Norma McGough, John
O’Malley, David Saunders, Adrian Thomas, Julian Walters, and David Wray.
NICE Short Guidelines Technical Team: Michael Heath, Ruth McAllister,
Fergus Macbeth, Roberta Richey, Elizabeth Shaw, Tim Stokes, and Daniel
please note it is david s sanders not saunders as noted above
No competing interests
29 May 2009
David S Sanders
Royal Hallamshire Hospital, Sheffield, Glossop Road, S10 2JF