CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 4,2006, Pages 289-292, doi:10.3760/j.issn:1004-4477.2006.04.013
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 4,2006, Pages 281-284, doi:10.3760/j.issn:1004-4477.2006.04.011
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 4,2006, Pages 300-302, doi:10.3760/j.issn:1004-4477.2006.04.016
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 4,2006, Pages 277-280, doi:10.3760/j.issn:1004-4477.2006.04.010
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 4,2006, Pages 251-254, doi:10.3760/j.issn:1004-4477.2006.04.003