NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 14,2009, Pages 967-969, doi:10.3760/cma.j.issn.0376-2491.2009.14.009
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 14,2009, Pages 962-966, doi:10.3760/cma.j.issn.0376-2491.2009.14.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 14,2009, Pages 970-972, doi:10.3760/cma.j.issn.0376-2491.2009.14.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 14,2009, Pages 997-1000, doi:10.3760/cma.j.issn.0376-2491.2009.14.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 14,2009, Pages 973-976, doi:10.3760/cma.j.issn.0376-2491.2009.14.011