FOREIGN MEDICAL SCIENCES(SECTION OF RESPIRATORY SYSTEM), Volume 22, Issue 2,2002, Pages 82-84, doi:10.3760/cma.j.issn.1673-436X.2002.02.008
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FOREIGN MEDICAL SCIENCES(SECTION OF RESPIRATORY SYSTEM), Volume 22, Issue 2,2002, Pages 70-72, doi:10.3760/cma.j.issn.1673-436X.2002.02.005
FOREIGN MEDICAL SCIENCES(SECTION OF RESPIRATORY SYSTEM), Volume 22, Issue 2,2002, Pages 63-65,69, doi:10.3760/cma.j.issn.1673-436X.2002.02.003
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