NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 13,2011, Pages 885-889, doi:10.3760/cma.j.issn.0376-2491.2011.13.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 13,2011, Pages 867-875, doi:10.3760/cma.j.issn.0376-2491.2011.13.002
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 13,2011, Pages 876-879, doi:10.3760/cma.j.issn.0376-2491.2011.13.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 13,2011, Pages 894-897, doi:10.3760/cma.j.issn.0376-2491.2011.13.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 91, Issue 13,2011, Pages 930-932, doi:10.3760/cma.j.issn.0376-2491.2011.13.017