Chinese Journal of Coal Industry Medicine, Volume 15, Issue 5,2012, Pages 651-653,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 5,2012, Pages 673-675,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 5,2012, Pages 716-717,
Chinese Journal of Coal Industry Medicine, Volume 15, Issue 5,2012, Pages 723-724,