NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2710-2713, doi:10.3760/j.issn:0376-2491.2007.38.012
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2672-2676, doi:10.3760/j.issn:0376-2491.2007.38.003
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2730-2732, doi:10.3760/j.issn:0376-2491.2007.38.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2693-2697, doi:10.3760/j.issn:0376-2491.2007.38.008
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 38,2007, Pages 2689-2692, doi:10.3760/j.issn:0376-2491.2007.38.007