Stephen Westaby, Nicholas Archer, Nicola Manning, Satish Adwani, Catherine Grebenik, Oliver Ormerod, Ravi Pillai, and Neil Wilson
BMJ 2007 335: 759.
[Abstract] [Abridged PDF] [Full text] [PDF]
Editorial
Data sources and performance measurement
Stephen Singleton
BMJ 2007;335:730
[Extract] [Full text] [PDF]