CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 5,2010, Pages 721-721,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 5,2010, Pages 782-783,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 5,2010, Pages 727-727,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 13, Issue 5,2010, Pages 702-703,