CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 4, Issue 7,2001, Pages 530-531, doi:10.3969/j.issn.1007-9564.2001.07.039
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 4, Issue 7,2001, Pages 569, doi:10.3969/j.issn.1007-9564.2001.07.090
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 4, Issue 7,2001, Pages 539, doi:10.3969/j.issn.1007-9564.2001.07.049
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 4, Issue 7,2001, Pages 558, doi:10.3969/j.issn.1007-9564.2001.07.080
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 4, Issue 7,2001, Pages 569, doi:10.3969/j.issn.1007-9564.2001.07.089