Trends in smoking and quitting in China from 1993 to 2003: National Health Service Survey data.
Qian
Juncheng
J
Center for Health Statistics and Information, Ministry of Health, Beijing, China.
Cai
Min
M
Gao
Jun
J
Tang
Shenglan
S
Xu
Ling
L
Critchley
Julia Alison
JA