In the article beginning on page 587 in the March 2018 issue, additional clarification is needed in the abstract and discussion sections.

The last sentence of the abstract currently reads, “This study demonstrated that genetic variation of BDNF is associated with an increased risk of chronic postsurgical pain.” It should read, “This study demonstrated that genetic variant of BDNF rs6265G>A is associated with decreased risk of chronic postsurgical pain.”

The first sentence of the last paragraph in the discussion currently reads, “Taken together, our data suggest that SNP at rs6265 in BDNF was associated with higher risk of chronic postsurgical pain.” It should read, “Taken together, our data suggest that the variant of BDNF rs6265G>A was associated with lower risk of chronic postsurgical pain.”

The online version and PDF of the article have been corrected.

Tian
Y
,
Liu
X
,
Jia
M
,
Yu
H
,
Lichtner
P
,
Shi
Y
,
Meng
Z
,
Kou
S
,
Ho
IHT
,
Jia
B
,
Cheng
BCP
,
Lam
CKM
,
Tsang
S
,
Wong
SH
,
Yu
J
,
Cheng
CHK
,
Gin
T
,
Wu
WKK
,
Chen
Z
,
Chan
MTV
:
Persistent Pain after Surgery Study Investigators: Targeted genotyping identifies susceptibility locus in brain-derived neurotrophic factor gene for chronic postsurgical pain.
Anesthesiology
2018
;
128
:
587
97