National Medical Journal of China, Volume 93, Issue 47,2013, Pages 3731-3732, doi:10.3760/cma.j.issn.0376-2491.2013.47.002
National Medical Journal of China, Volume 93, Issue 47,2013, Pages 3748-3751, doi:10.3760/cma.j.issn.0376-2491.2013.47.007
National Medical Journal of China, Volume 93, Issue 47,2013, Pages 3766-3769, doi:10.3760/cma.j.issn.0376-2491.2013.47.012
National Medical Journal of China, Volume 93, Issue 47,2013, Pages 3779-3782, doi:10.3760/cma.j.issn.0376-2491.2013.47.016
National Medical Journal of China, Volume 93, Issue 47,2013, Pages 3776-3778, doi:10.3760/cma.j.issn.0376-2491.2013.47.015