Chinese Journal of Ultrasonography, Volume 21, Issue 12,2012, Pages 1026-1030, doi:10.3760/cma.j.issn.1004-4477.2012.12.005
Chinese Journal of Ultrasonography, Volume 21, Issue 12,2012, Pages 1056-1059, doi:10.3760/cma.j.issn.1004-4477.2012.12.015
Chinese Journal of Ultrasonography, Volume 21, Issue 12,2012, Pages 1017-1021, doi:10.3760/cma.j.issn.1004-4477.2012.12.002
Chinese Journal of Ultrasonography, Volume 21, Issue 12,2012, Pages 1013-1016, doi:10.3760/cma.j.issn.1004-4477.2012.12.001
Chinese Journal of Ultrasonography, Volume 21, Issue 12,2012, Pages 1077, doi:10.3760/cma.j.issn.1004-4477.2012.12.021