Citation

Yang GJ, Qin H. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2007; 25(4): 256.

Copyright

(Copyright © 2007, Tianjin shi lao dong wei sheng yan jiu suo)

DOI

unavailable

PMID

17535676

Abstract

[Abstract unavailable]

Language: zh