CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 4,2007, Pages 341-344, doi:10.3760/j.issn:1004-4477.2007.04.019
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 4,2007, Pages 304-305, doi:10.3760/j.issn:1004-4477.2007.04.008
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 4,2007, Pages 321-323, doi:10.3760/j.issn:1004-4477.2007.04.013
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 4,2007, Pages 327-330, doi:10.3760/j.issn:1004-4477.2007.04.015
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 4,2007, Pages 353-356, doi:10.3760/j.issn:1004-4477.2007.04.022