CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 7, Issue 8,2004, Pages 772-773, doi:10.3969/j.issn.1007-9564.2004.08.070
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 7, Issue 8,2004, Pages 776-776, doi:10.3969/j.issn.1007-9564.2004.08.090
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 7, Issue 8,2004, Pages 711-711, doi:10.3969/j.issn.1007-9564.2004.08.012
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 7, Issue 8,2004, Pages 732-732, doi:10.3969/j.issn.1007-9564.2004.08.031
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 7, Issue 8,2004, Pages 755-755, doi:10.3969/j.issn.1007-9564.2004.08.053