Citation

Zheng L, Song XQ, Wang ZZ. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2010; 28(6): 436-438.

Copyright

(Copyright © 2010, Tianjin shi lao dong wei sheng yan jiu suo)

DOI

unavailable

PMID

21033157

Abstract

[Abstract unavailable]

Language: zh