CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 2,2010, Pages 280-280,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 2,2010, Pages 175-177,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 2,2010, Pages 207-208,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 2,2010, Pages 281-281,