PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/oemed-2013-101396corr1 DP - 2014 Apr 01 TA - Occupational and Environmental Medicine PG - 304--304 VI - 71 IP - 4 4099 - http://oem.bmj.com/content/71/4/304.short 4100 - http://oem.bmj.com/content/71/4/304.full SO - Occup Environ Med2014 Apr 01; 71