CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 8, Issue 5,1999, Pages 282, doi:10.3760/cma.j.issn.1004-4477.1999.05.1139
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 8, Issue 5,1999, Pages 289-291, doi:10.3760/cma.j.issn.1004-4477.1999.05.1143
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 8, Issue 5,1999, Pages 279, doi:10.3760/cma.j.issn.1004-4477.1999.05.1137
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 8, Issue 5,1999, Pages 319, doi:10.3760/cma.j.issn.1004-4477.1999.05.1159
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 8, Issue 5,1999, Pages 311-313, doi:10.3760/cma.j.issn.1004-4477.1999.05.1154