National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2742-2744, doi:10.3760/cma.j.issn.0376-2491.2013.34.016
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2765-2766, doi:10.3760/cma.j.issn.0376-2491.2013.34.022
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2699-2702, doi:10.3760/cma.j.issn.0376-2491.2013.34.004
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2723-2726, doi:10.3760/cma.j.issn.0376-2491.2013.34.010
National Medical Journal of China, Volume 93, Issue 34,2013, Pages 2715-2718, doi:10.3760/cma.j.issn.0376-2491.2013.34.008