CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 3,2003, Pages 282-284, doi:10.3969/j.issn.1007-9564.2003.03.080
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CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 3,2003, Pages 279-279, doi:10.3969/j.issn.1007-9564.2003.03.076
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 6, Issue 3,2003, Pages 206-207, doi:10.3969/j.issn.1007-9564.2003.03.009