CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 3,2009, Pages 425-426,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 3,2009, Pages 408-408,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 3,2009, Pages 491-492,
CHINESE JOURNAL OF COAL INDUSTRY MEDICINE, Volume 12, Issue 3,2009, Pages 359-360,