NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 14,2002, Pages 941-944, doi:10.3760/j:issn:0376-2491.2002.14.003
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NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 14,2002, Pages 952-954, doi:10.3760/j:issn:0376-2491.2002.14.006
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 14,2002, Pages 965, doi:10.3760/j:issn:0376-2491.2002.14.031
NATIONAL MEDICAL JOURNAL OF CHINA, Volume 82, Issue 14,2002, Pages 1000-1001, doi:10.3760/j:issn:0376-2491.2002.14.027