PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/oem.2006.028829corr1 DP - 2009 Apr 01 TA - Occupational and Environmental Medicine PG - 280--280 VI - 66 IP - 4 4099 - http://oem.bmj.com/content/66/4/280.short 4100 - http://oem.bmj.com/content/66/4/280.full SO - Occup Environ Med2009 Apr 01; 66