RT Journal Article SR Electronic T1 Cancer Treatment: fourth edition JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 847 OP 847 DO 10.1136/oem.52.12.847 VO 52 IS 12 A1 A Bulman YR 1995 UL http://oem.bmj.com/content/52/12/847.1.abstract AB