CHINESE JOURNAL OF STOMATOLOGY, Volume 38, Issue 4,2003, Pages 316-318, doi:10.3760/j.issn:1002-0098.2003.04.026
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CHINESE JOURNAL OF STOMATOLOGY, Volume 38, Issue 4,2003, Pages 253, doi:10.3760/j.issn:1002-0098.2003.04.028
CHINESE JOURNAL OF STOMATOLOGY, Volume 38, Issue 4,2003, Pages 300-303, doi:10.3760/j.issn:1002-0098.2003.04.021