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CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 32, Issue 19,2009, Pages 19-21, doi:10.3760/cma.j.issn.1673-4904.2009.19.009
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 32, Issue 19,2009, Pages 73-75, doi:10.3760/cma.j.issn.1673-4904.2009.19.033
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 32, Issue 19,2009, Pages 75-77, doi:10.3760/cma.j.issn.1673-4904.2009.19.034