CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 1,2006, Pages 61-64, doi:10.3760/j.issn:1004-4477.2006.01.017
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 1,2006, Pages 17-20, doi:10.3760/j.issn:1004-4477.2006.01.005
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 1,2006, Pages 75-76, doi:10.3760/j.issn:1004-4477.2006.01.034
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 1,2006, Pages 74-75, doi:10.3760/j.issn:1004-4477.2006.01.033
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 1,2006, Pages 50-53, doi:10.3760/j.issn:1004-4477.2006.01.014