CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 9,2007, Pages 54,56, doi:10.3760/cma.j.issn.1673-4904.2007.09.023
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CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 9,2007, Pages 11-12,15, doi:10.3760/cma.j.issn.1673-4904.2007.09.005