@misc{Chen_Rouling_Calculation,
 author={Chen, Rouling and Brewer, Mark and Wei, Li},
 copyright={Chen, Rouling},
 copyright={Brewer, Mark},
 copyright={Wei, Li},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={eng},
 type={serial - article},
 type={language document},
 title={Calculation and comparison of average standardised mortality ratio in occupational cohort study},
}