CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 1,2002, Pages 45-48, doi:10.3760/cma.j.issn.1008-6706.2002.01.084
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 1,2002, Pages 55, doi:10.3760/cma.j.issn.1008-6706.2002.01.084
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 1,2002, Pages 6, doi:10.3760/cma.j.issn.1008-6706.2002.01.084
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 1,2002, Pages 33-34, doi:10.3760/cma.j.issn.1008-6706.2002.01.084
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 11, Issue 1,2002, Pages 49-52, doi:10.3760/cma.j.issn.1008-6706.2002.01.084