NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 23,2009, Pages 1607-1610, doi:10.3760/cma.j.issn.0376-2491.2009.23.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 23,2009, Pages 1645-1649, doi:10.3760/cma.j.issn.0376-2491.2009.23.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 23,2009, Pages 1617-1619, doi:10.3760/cma.j.issn.0376-2491.2009.23.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 23,2009, Pages 1627-1629, doi:10.3760/cma.j.issn.0376-2491.2009.23.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 23,2009, Pages 1620-1622, doi:10.3760/cma.j.issn.0376-2491.2009.23.010