NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 20,2003, Pages 1836, doi:10.3760/j:issn:0376-2491.2003.20.027
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 20,2003, Pages 1791-1794, doi:10.3760/j:issn:0376-2491.2003.20.010
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 20,2003, Pages 1764-1768, doi:10.3760/j:issn:0376-2491.2003.20.004
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 20,2003, Pages 1795-1800, doi:10.3760/j:issn:0376-2491.2003.20.011
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 83, Issue 20,2003, Pages 1834-1835, doi:10.3760/j:issn:0376-2491.2003.20.026