CHINESE JOURNAL OF SURGERY, Volume 40, Issue 4,2002, Pages 251-253, doi:10.3760/j:issn:0529-5815.2002.04.004
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CHINESE JOURNAL OF SURGERY, Volume 40, Issue 4,2002, Pages 254-255, doi:10.3760/j:issn:0529-5815.2002.04.005