Citation

Sun L, Liu JN, Xia GQ. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2012; 30(11): 871-872.

Copyright

(Copyright © 2012, Tianjin shi lao dong wei sheng yan jiu suo)

DOI

unavailable

PMID

23257047

Abstract

[Abstract unavailable]

Language: zh