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CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 31, Issue 36,2008, Pages 14-16, doi:10.3760/cma.j.issn.1673-4904.2008.36.006
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 31, Issue 36,2008, Pages 48-50, doi:10.3760/cma.j.issn.1673-4904.2008.36.021
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 31, Issue 36,2008, Pages 17-19, doi:10.3760/cma.j.issn.1673-4904.2008.36.007