RT Journal Article SR Electronic T1 Polychlorinated biphenyls: estimated serum half lives. JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 527 OP 528 DO 10.1136/oem.49.7.527 VO 49 IS 7 A1 P R Taylor A1 C E Lawrence YR 1992 UL http://oem.bmj.com/content/49/7/527.abstract AB