CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 6,2006, Pages 414,417, doi:10.3760/j.issn:1004-4477.2006.06.027
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 6,2006, Pages 431-434, doi:10.3760/j.issn:1004-4477.2006.06.010
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 6,2006, Pages 449-452, doi:10.3760/j.issn:1004-4477.2006.06.015
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 6,2006, Pages 473-475, doi:10.3760/j.issn:1004-4477.2006.06.021
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 15, Issue 6,2006, Pages 425-427, doi:10.3760/j.issn:1004-4477.2006.06.008