NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 25,2008, Pages 1746-1749, doi:10.3321/j.issn:0376-2491.2008.25.005
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 25,2008, Pages 1772-1777, doi:10.3321/j.issn:0376-2491.2008.25.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 25,2008, Pages 1787-1789, doi:10.3321/j.issn:0376-2491.2008.25.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 25,2008, Pages 1796-1798, doi:10.3321/j.issn:0376-2491.2008.25.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 88, Issue 25,2008, Pages 1750-1752, doi:10.3321/j.issn:0376-2491.2008.25.006