NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 28,2009, Pages 1979-1982, doi:10.3760/cma.j.issn.0376-2491.2009.28.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 28,2009, Pages 1951-1954, doi:10.3760/cma.j.issn.0376-2491.2009.28.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 28,2009, Pages 1950, doi:10.3760/cma.j.issn.0376-2491.2009.28.003
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 89, Issue 28,2009, Pages 1954, doi:10.3760/cma.j.issn.0376-2491.2009.28.005