National Medical Journal of China, Volume 94, Issue 17,2014, Pages 1294-1297, doi:10.3760/cma.j.issn.0376-2491.2014.17.004
National Medical Journal of China, Volume 94, Issue 17,2014, Pages 1289-1293, doi:10.3760/cma.j.issn.0376-2491.2014.17.003
National Medical Journal of China, Volume 94, Issue 17,2014, Pages 1326-1329, doi:10.3760/cma.j.issn.0376-2491.2014.17.011
National Medical Journal of China, Volume 94, Issue 17,2014, Pages 1349-1352, doi:10.3760/cma.j.issn.0376-2491.2014.17.017
National Medical Journal of China, Volume 94, Issue 17,2014, Pages 1304-1308, doi:10.3760/cma.j.issn.0376-2491.2014.17.006