CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 4,2003, Pages 293-294, doi:10.3969/j.issn.1007-9564.2003.04.002
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CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 4,2003, Pages 367-368, doi:10.3969/j.issn.1007-9564.2003.04.073
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 4,2003, Pages 357-358, doi:10.3969/j.issn.1007-9564.2003.04.062
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 4,2003, Pages 347-348, doi:10.3969/j.issn.1007-9564.2003.04.051