In this article (Cancer Epidemiol Biomarkers Prev 2008;17:2311–7), which appeared in the September 2008 issue of Cancer Epidemiology, Biomarkers & Prevention (1), the shading in Fig. 1 was inverted. The “Controls” should have no shading and the “NHANES” should be shaded. The figure with the correct shading is shown below. The publisher regrets this error.

1.
McElroy
JA
,
Shafer
MM
,
Gangnon
RE
,
Crouch
LA
,
Newcomb
PA
. 
Urinary lead exposure and breast cancer risk in a population-based case–control study
.
Cancer Epidemiol Biomarkers Prev
2008
;
17
:
2311
7
.