National Medical Journal of China, Volume 94, Issue 2,2014, Pages 153-156, doi:10.3760/cma.j.issn.0376-2491.2014.02.018
National Medical Journal of China, Volume 94, Issue 2,2014, Pages 134-138, doi:10.3760/cma.j.issn.0376-2491.2014.02.013
National Medical Journal of China, Volume 94, Issue 2,2014, Pages 160, doi:10.3760/cma.j.issn.0376-2491.2014.02.020
National Medical Journal of China, Volume 94, Issue 2,2014, Pages 127-130, doi:10.3760/cma.j.issn.0376-2491.2014.02.011
National Medical Journal of China, Volume 94, Issue 2,2014, Pages 110-114, doi:10.3760/cma.j.issn.0376-2491.2014.02.008