CHINESE JOURNAL OF PEDIATRIC SURGERY, Volume 20, Issue 3,1999, Pages 153-154, doi:10.3760/cma.j.issn.0253-3006.1999.03.009
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CHINESE JOURNAL OF PEDIATRIC SURGERY, Volume 20, Issue 3,1999, Pages 172-174, doi:10.3760/cma.j.issn.0253-3006.1999.03.017