Citation

Yu JN, Zhang CY, Wu SS. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2013; 31(1): 65-67.

Copyright

(Copyright © 2013, Tianjin shi lao dong wei sheng yan jiu suo)

DOI

unavailable

PMID

23433166

Abstract

[Abstract unavailable]

Language: zh