NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 38,2009, Pages 2707, doi:10.3760/cma.j.issn.0376-2491.2009.38.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 38,2009, Pages 2675-2681, doi:10.3760/cma.j.issn.0376-2491.2009.38.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 38,2009, Pages 2729-2731, doi:10.3760/cma.j.issn.0376-2491.2009.38.020
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 38,2009, Pages 2699-2701, doi:10.3760/cma.j.issn.0376-2491.2009.38.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 38,2009, Pages 2722-2725, doi:10.3760/cma.j.issn.0376-2491.2009.38.018