National Medical Journal of China, Volume 92, Issue 47,2012, Pages 3313-3316, doi:10.3760/cma.j.issn.0376-2491.2012.47.001
National Medical Journal of China, Volume 92, Issue 47,2012, Pages 3333-3335, doi:10.3760/cma.j.issn.0376-2491.2012.47.007
National Medical Journal of China, Volume 92, Issue 47,2012, Pages 3354-3357, doi:10.3760/cma.j.issn.0376-2491.2012.47.013
National Medical Journal of China, Volume 92, Issue 47,2012, Pages 3382, doi:10.3760/cma.j.issn.0376-2491.2012.47.022
National Medical Journal of China, Volume 92, Issue 47,2012, Pages 3350-3353, doi:10.3760/cma.j.issn.0376-2491.2012.47.012