NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 33,2009, Pages 2353-2355, doi:10.3760/cma.j.issn.0376-2491.2009.33.013
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 33,2009, Pages 2315-2318, doi:10.3760/cma.j.issn.0376-2491.2009.33.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 33,2009, Pages 2368-2371, doi:10.3760/cma.j.issn.0376-2491.2009.33.017
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 33,2009, Pages 2309-2314, doi:10.3760/cma.j.issn.0376-2491.2009.33.003