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CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 17,2007, Pages 21-23,26, doi:10.3760/cma.j.issn.1673-4904.2007.17.008
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 17,2007, Pages 27-29, doi:10.3760/cma.j.issn.1673-4904.2007.17.010
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 17,2007, Pages 3-4, doi:10.3760/cma.j.issn.1673-4904.2007.17.002