CHINESE JOURNAL OF GASTROINTESTINAL SURGERY, Volume 3, Issue 3,2000, Pages 191-192, doi:10.3760/cma.j.issn.1671-0274.2000.03.030
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CHINESE JOURNAL OF GASTROINTESTINAL SURGERY, Volume 3, Issue 3,2000, Pages 166-168, doi:10.3760/cma.j.issn.1671-0274.2000.03.012