RT Journal Article SR Electronic T1 Monitoring trends in occupational illness JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 691 OP 692 DO 10.1136/oem.58.11.691 VO 58 IS 11 A1 D COGGON YR 2001 UL http://oem.bmj.com/content/58/11/691.abstract AB