CHINESE JOURNAL OF RADIOLOGY, Volume 38, Issue 3,2004, Pages 306-309, doi:10.3760/j.issn:1005-1201.2004.03.018
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CHINESE JOURNAL OF RADIOLOGY, Volume 38, Issue 3,2004, Pages 287-290, doi:10.3760/j.issn:1005-1201.2004.03.014