CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 14, Issue 9,2011, Pages 1389-1391,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 14, Issue 9,2011, Pages 1366-1368,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 14, Issue 9,2011, Pages 1302-1303,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 14, Issue 9,2011, Pages 1384-1385,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 14, Issue 9,2011, Pages 1330-1331,