Chinese Journal of Ultrasonography, Volume 20, Issue 8,2011, Pages 726-728, doi:10.3760/cma.j.issn.1004-4477.2011.08.029
Chinese Journal of Ultrasonography, Volume 20, Issue 8,2011, Pages 702,706, doi:10.3760/cma.j.issn.1004-4477.2011.08.021
Chinese Journal of Ultrasonography, Volume 20, Issue 8,2011, Pages 652-655, doi:10.3760/cma.j.issn.1004-4477.2011.08.003
Chinese Journal of Ultrasonography, Volume 20, Issue 8,2011, Pages 696-698, doi:10.3760/cma.j.issn.1004-4477.2011.08.019
Chinese Journal of Ultrasonography, Volume 20, Issue 8,2011, Pages 692-695, doi:10.3760/cma.j.issn.1004-4477.2011.08.017