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CHINESE JOURNAL OF PEDIATRIC SURGERY, Volume 21, Issue 3,2000, Pages 175-176, doi:10.3760/cma.j.issn.0253-3006.2000.03.018
CHINESE JOURNAL OF PEDIATRIC SURGERY, Volume 21, Issue 3,2000, Pages 148-150, doi:10.3760/cma.j.issn.0253-3006.2000.03.008