NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 23,2007, Pages 1627-1632, doi:10.3760/j:issn:0376-2491.2007.23.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 23,2007, Pages 1607-1610, doi:10.3760/j:issn:0376-2491.2007.23.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 23,2007, Pages 1656, doi:10.3760/j:issn:0376-2491.2007.23.019
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 23,2007, Pages 1641-1645, doi:10.3760/j:issn:0376-2491.2007.23.014
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 23,2007, Pages 1633-1636, doi:10.3760/j:issn:0376-2491.2007.23.012