Chinese Journal of Coal Industry Medicine, Volume 15, Issue 9,2012, Pages 1407-1410,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 9,2012, Pages 1404-1405,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 9,2012, Pages 1329-1330,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 9,2012, Pages 1355-1357,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 9,2012, Pages 1480-1481,