CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 2,2007, Pages 151-153, doi:10.3760/j.issn:1004-4477.2007.02.017
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 2,2007, Pages 148-150, doi:10.3760/j.issn:1004-4477.2007.02.016
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CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 2,2007, Pages 128-131, doi:10.3760/j.issn:1004-4477.2007.02.010
CHINESE JOURNAL OF ULTRASONOGRAPHY, Volume 16, Issue 2,2007, Pages 139-141, doi:10.3760/j.issn:1004-4477.2007.02.013