National Medical Journal of China, Volume 92, Issue 45,2012, Pages 3221-3223, doi:10.3760/cma.j.issn.0376-2491.2012.45.017
National Medical Journal of China, Volume 92, Issue 45,2012, Pages 3187-3188, doi:10.3760/cma.j.issn.0376-2491.2012.45.007
National Medical Journal of China, Volume 92, Issue 45,2012, Pages 3224-3226, doi:10.3760/cma.j.issn.0376-2491.2012.45.018
National Medical Journal of China, Volume 92, Issue 45,2012, Pages 3194-3198, doi:10.3760/cma.j.issn.0376-2491.2012.45.010
National Medical Journal of China, Volume 92, Issue 45,2012, Pages 3178-3181, doi:10.3760/cma.j.issn.0376-2491.2012.45.004