National Medical Journal of China, Volume 94, Issue 20,2014, Pages 1563-1566, doi:10.3760/cma.j.issn.0376-2491.2014.20.011
National Medical Journal of China, Volume 94, Issue 20,2014, Pages 1573-1576, doi:10.3760/cma.j.issn.0376-2491.2014.20.014
National Medical Journal of China, Volume 94, Issue 20,2014, Pages 1547-1552, doi:10.3760/cma.j.issn.0376-2491.2014.20.008
National Medical Journal of China, Volume 94, Issue 20,2014, Pages 1587-1589, doi:10.3760/cma.j.issn.0376-2491.2014.20.018
National Medical Journal of China, Volume 94, Issue 20,2014, Pages 1526-1529, doi:10.3760/cma.j.issn.0376-2491.2014.20.003