RT Journal Article SR Electronic T1 PBN as a possible bladder carcinogen JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 500 OP 500 DO 10.1136/oem.57.7.500 VO 57 IS 7 A1 C A VEYS YR 2000 UL http://oem.bmj.com/content/57/7/500.1.abstract AB