Chinese Journal of Ultrasonography, Volume 21, Issue 1,2012, Pages 18, doi:10.3760/cma.j.issn.1004-4477.2012.01.005
Chinese Journal of Ultrasonography, Volume 21, Issue 1,2012, Pages 75-78, doi:10.3760/cma.j.issn.1004-4477.2012.01.026
Chinese Journal of Ultrasonography, Volume 21, Issue 1,2012, Pages 6-9, doi:10.3760/cma.j.issn.1004-4477.2012.01.002
Chinese Journal of Ultrasonography, Volume 21, Issue 1,2012, Pages 27-30, doi:10.3760/cma.j.issn.1004-4477.2012.01.009
Chinese Journal of Ultrasonography, Volume 21, Issue 1,2012, Pages 10-13, doi:10.3760/cma.j.issn.1004-4477.2012.01.003