CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 8,2007, Pages 677-680, doi:10.3760/j.issn:1004-4477.2007.08.009
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 8,2007, Pages 733-734, doi:10.3760/j.issn:1004-4477.2007.08.027
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 8,2007, Pages 645-650, doi:10.3760/j.issn:1004-4477.2007.08.001
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 8,2007, Pages 718-721, doi:10.3760/j.issn:1004-4477.2007.08.020