[Investigation on status quo of occupational hygiene service and requirement of mobile workers in 80 industrial enterprises].
Cao-lin
CL
Li
Xiu-e
XE
Fan
Shuang
S
Li
D002322:Career Mobility; D002681:China; D006801:Humans; D009786:Occupational Health Services / Q000706:statistics & numerical data*; D012494:Sampling Studies