Newspaper coverage about smoking in leading Chinese newspapers in past nine years.
Liu
Yu
Y
Jiang
Lifei
L
Xiao
Hai
H
Liu
Qiaojing
Q
Li
Bing
B
Xu
Wanhai
W
D002681:China; D006801:Humans; D009524:Newspapers as Topic / Q000639:trends*; D012907:Smoking / Q000639:trends*