PT - JOURNAL ARTICLE ED - , TI - Erratum AID - 10.7861/clinmedicine.7-6-640 DP - 2007 Dec 01 TA - Clinical Medicine PG - 640--640 VI - 7 IP - 6 4099 - http://www.rcpjournals.org/content/7/6/640.short 4100 - http://www.rcpjournals.org/content/7/6/640.full SO - Clin Med2007 Dec 01; 7