NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 16,2009, Pages 1110-1113, doi:10.3760/cma.j.issn.0376-2491.2009.16.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 16,2009, Pages 1152, doi:10.3760/cma.j.issn.0376-2491.2009.16.021
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 16,2009, Pages 1126-1129, doi:10.3760/cma.j.issn.0376-2491.2009.16.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 16,2009, Pages 1117-1121, doi:10.3760/cma.j.issn.0376-2491.2009.16.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 16,2009, Pages 1106-1109, doi:10.3760/cma.j.issn.0376-2491.2009.16.008