CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 17, Issue 8,2008, Pages 711, doi:10.3321/j.issn:1004-4477.2008.08.029
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 17, Issue 8,2008, Pages 678-680, doi:10.3321/j.issn:1004-4477.2008.08.010
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 17, Issue 8,2008, Pages 694-696, doi:10.3321/j.issn:1004-4477.2008.08.014
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 17, Issue 8,2008, Pages 681-684, doi:10.3321/j.issn:1004-4477.2008.08.011