Chinese Journal of Coal Industry Medicine, Volume 15, Issue 12,2012, Pages 2042-2043,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 12,2012, Pages 1888-1889,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 12,2012, Pages 1945-1947,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 12,2012, Pages 1850-1852,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 12,2012, Pages 1852-1856,