Mayor of London Mr Ashwin Tanna, a candidate in the mayor of London election does not have a policy of introducing congestion charging for cars, as reported last week (p84).
Quality assessment guide Copies of the National Primary Care Research and Development Centre and National Prescribing Centre guide to quality assessment and clinical governance are available from the NPCRDC order line (tel 0161 275 7126, e-mail communit@fs1.cpcr.man.ac.uk). This information was omitted from our report on the guide (PJ, January 8, p45).