CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 3,2002, Pages 133-136, doi:10.3760/j.issn:1004-4477.2002.03.001
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 3,2002, Pages 170-172, doi:10.3760/j.issn:1004-4477.2002.03.012
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 3,2002, Pages 191-192, doi:10.3760/j.issn:1004-4477.2002.03.023
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 3,2002, Pages 157-160, doi:10.3760/j.issn:1004-4477.2002.03.008
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 3,2002, Pages 179-180, doi:10.3760/j.issn:1004-4477.2002.03.015