CHINESE JOURNAL OF SURGERY, Volume 49, Issue 5,2011, Pages 445-449, doi:10.3760/cma.j.issn.0529-5815.2011.05.015
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CHINESE JOURNAL OF SURGERY, Volume 49, Issue 5,2011, Pages 453-455, doi:10.3760/cma.j.issn.0529-5815.2011.05.017
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