NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 37,2007, Pages 2653-2656, doi:10.3760/j.issn:0376-2491.2007.37.015
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 37,2007, Pages 2618-2622, doi:10.3760/j.issn:0376-2491.2007.37.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 37,2007, Pages 2657-2659, doi:10.3760/j.issn:0376-2491.2007.37.016
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 37,2007, Pages 2635-2639, doi:10.3760/j.issn:0376-2491.2007.37.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 37,2007, Pages 2649-2652, doi:10.3760/j.issn:0376-2491.2007.37.014