RT Journal Article SR Electronic T1 Deutsche Forschungsgemeinschaft. Biological Monitoring. Prospects in Occupational and Environmental Medicine JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 94 OP 94 VO 61 IS 1 A1 P B Farmer YR 2004 UL http://oem.bmj.com/content/61/1/94.1.abstract AB