National Medical Journal of China, Volume 94, Issue 16,2014, Pages 1252-1254, doi:10.3760/cma.j.issn.0376-2491.2014.16.013
National Medical Journal of China, Volume 94, Issue 16,2014, Pages 1209-1214, doi:10.3760/cma.j.issn.0376-2491.2014.16.004
National Medical Journal of China, Volume 94, Issue 16,2014, Pages 1265-1269, doi:10.3760/cma.j.issn.0376-2491.2014.16.017
National Medical Journal of China, Volume 94, Issue 16,2014, Pages 1277-1279, doi:10.3760/cma.j.issn.0376-2491.2014.16.020
National Medical Journal of China, Volume 94, Issue 16,2014, Pages 1232-1236, doi:10.3760/cma.j.issn.0376-2491.2014.16.009