PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/oemed-2012-100797corr1 DP - 2013 Jan 01 TA - Occupational and Environmental Medicine PG - 72--72 VI - 70 IP - 1 4099 - http://oem.bmj.com/content/70/1/72.short 4100 - http://oem.bmj.com/content/70/1/72.full SO - Occup Environ Med2013 Jan 01; 70