National Medical Journal of China, Volume 95, Issue 4,2015, Pages 260-263, doi:10.3760/cma.j.issn.0376-2491.2015.04.005
National Medical Journal of China, Volume 95, Issue 4,2015, Pages 248-251, doi:10.3760/cma.j.issn.0376-2491.2015.04.002
National Medical Journal of China, Volume 95, Issue 4,2015, Pages 306-307, doi:10.3760/cma.j.issn.0376-2491.2015.04.015
National Medical Journal of China, Volume 95, Issue 4,2015, Pages 277-282, doi:10.3760/cma.j.issn.0376-2491.2015.04.009
National Medical Journal of China, Volume 95, Issue 4,2015, Pages 289-293, doi:10.3760/cma.j.issn.0376-2491.2015.04.012