PT - JOURNAL ARTICLE AU - Malcolm Lewis TI - Mechanisms of revalidation DP - 2005 Aug 01 TA - British Journal of General Practice PG - 640--641 VI - 55 IP - 517 4099 - http://bjgp.org/content/55/517/640.short 4100 - http://bjgp.org/content/55/517/640.full SO - Br J Gen Pract2005 Aug 01; 55