In this article (1), which was published in the October 2009 issue of Cancer Epidemiology, Biomarkers & Prevention, there were errors in some abbreviations used for estrogens and estrogen metabolites (EM) when considered as a proportion of total EM. For example, “16%-hydroxylation pathway EM” is incorrect, and should be “%16-hydroxylation pathway EM.” Similarly, “%4-OHE1,” “%2-MeOE1,” “%2-MeOE2,” “%16-ketoE2,” and “%16-epiE3” are the correct abbreviations.

1
Fuhrman
BJ
,
Pfeiffer
R
,
Xu
X
,
Wu
A
,
Korde
L
,
Gail
MH
,
Keefer
LK
,
Veenstra
TD
,
Hoover
RN
,
Ziegler
RG
. 
Soy intake is associated with increased 2-hydroxylation and decreased 16-hydroxylation of estrogens in Asian-American women
.
Cancer Epidemiol Biomarkers Prev
2009
;
18
:
2751
60
.