NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 39,2007, Pages 2759-2763, doi:10.3760/j.issn:0376-2491.2007.39.007
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 39,2007, Pages 2741-2744, doi:10.3760/j.issn:0376-2491.2007.39.003
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 39,2007, Pages 2808, doi:10.3760/j.issn:0376-2491.2007.39.018
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 39,2007, Pages 2745-2749, doi:10.3760/j.issn:0376-2491.2007.39.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 87, Issue 39,2007, Pages 2780-2784, doi:10.3760/j.issn:0376-2491.2007.39.012