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CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 7,2007, Pages 11-13, doi:10.3760/cma.j.issn.1673-4904.2007.07.004
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 7,2007, Pages 38-40, doi:10.3760/cma.j.issn.1673-4904.2007.07.013
CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE, Volume 30, Issue 7,2007, Pages 29-30,40, doi:10.3760/cma.j.issn.1673-4904.2007.07.010