CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 9, Issue 2,2006, Pages 191-191, doi:10.3969/j.issn.1007-9564.2006.02.084
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CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 9, Issue 2,2006, Pages 145-145, doi:10.3969/j.issn.1007-9564.2006.02.032
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 9, Issue 2,2006, Pages 141-142, doi:10.3969/j.issn.1007-9564.2006.02.029