RT Journal Article SR Electronic T1 Hazardous waste landfill sites and congenital anomalies JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 79 OP 80 DO 10.1136/oem.60.2.79 VO 60 IS 2 A1 R M Harrison YR 2003 UL http://oem.bmj.com/content/60/2/79.abstract AB