CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 10,2007, Pages 867-870, doi:10.3760/j.issn:1004-4477.2007.10.012
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 10,2007, Pages 885,897, doi:10.3760/j.issn:1004-4477.2007.10.026
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 10,2007, Pages 847-849, doi:10.3760/j.issn:1004-4477.2007.10.006
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 10,2007, Pages 883-885, doi:10.3760/j.issn:1004-4477.2007.10.017
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 10,2007, Pages 844-846, doi:10.3760/j.issn:1004-4477.2007.10.005