[Professional health in China's township enterprises: development and challenge].
Li
C
C
Huang
M
M
Cai
S
S
Zou
C
C
Gao
Y
Y
D002681:China / Q000453:epidemiology; D006801:Humans; D009784:Occupational Diseases / Q000453:epidemiology / Q000517:prevention & control*; D016273:Occupational Exposure / Q000517:prevention & control*; D016272:Occupational Health; D012424:Rural Population