PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/oem.59.12.854-a DP - 2002 Dec 01 TA - Occupational and Environmental Medicine PG - 854--854 VI - 59 IP - 12 4099 - http://oem.bmj.com/content/59/12/854.2.short 4100 - http://oem.bmj.com/content/59/12/854.2.full SO - Occup Environ Med2002 Dec 01; 59