RT Journal Article SR Electronic T1 Patch testing in occupational dermatology JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 823 OP 828 DO 10.1136/oem.58.12.823 VO 58 IS 12 A1 David J Gawkrodger YR 2001 UL http://oem.bmj.com/content/58/12/823.abstract AB