NATION MEDICAL JOURNAL OF CHINA, Volume 81, Issue 4,2001, Pages 227-230, doi:10.3760/j:issn:0376-2491.2001.04.011
NATION MEDICAL JOURNAL OF CHINA, Volume 81, Issue 4,2001, Pages 237-238, doi:10.3760/j:issn:0376-2491.2001.04.014
NATION MEDICAL JOURNAL OF CHINA, Volume 81, Issue 4,2001, Pages 201-204, doi:10.3760/j:issn:0376-2491.2001.04.004
NATION MEDICAL JOURNAL OF CHINA, Volume 81, Issue 4,2001, Pages 197-200, doi:10.3760/j:issn:0376-2491.2001.04.003
NATION MEDICAL JOURNAL OF CHINA, Volume 81, Issue 4,2001, Pages 235-236, doi:10.3760/j:issn:0376-2491.2001.04.013