CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 10,2009, Pages 1587-1588,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 10,2009, Pages 1633-1634,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 10,2009, Pages 1586,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 10,2009, Pages 1599,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 10,2009, Pages 1602-1603,