Chinese Journal of Coal Industry Medicine, Volume 15, Issue 7,2012, Pages 965-967,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 7,2012, Pages 991-993,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 7,2012, Pages 1045-1046,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 7,2012, Pages 976-979,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 7,2012, Pages 1065,