National Medical Journal of China, Volume 93, Issue 21,2013, Pages 1615-1618, doi:10.3760/cma.j.issn.0376-2491.2013.21.005
National Medical Journal of China, Volume 93, Issue 21,2013, Pages 1674-1676, doi:10.3760/cma.j.issn.0376-2491.2013.21.021
National Medical Journal of China, Volume 93, Issue 21,2013, Pages 1637-1639, doi:10.3760/cma.j.issn.0376-2491.2013.21.011
National Medical Journal of China, Volume 93, Issue 21,2013, Pages 1604-1606, doi:10.3760/cma.j.issn.0376-2491.2013.21.002
National Medical Journal of China, Volume 93, Issue 21,2013, Pages 1622-1625, doi:10.3760/cma.j.issn.0376-2491.2013.21.007