RT Journal Article SR Electronic T1 Mercury and dentists JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 285 OP 286 DO 10.1136/oem.59.5.285 VO 59 IS 5 A1 Echeverria, D YR 2002 UL http://oem.bmj.com/content/59/5/285.abstract AB