CHINESE COMMUNITY DOCTORS, Volume 13, Issue 13,2011, Pages 209, doi:10.3969/j.issn.1007-614x.2011.13.210
CHINESE JOURNAL OF NOSOCOMIOLOGY, Volume 21, Issue 13,2011, Pages 2773-2775,
CHINA PRACTICAL MEDICAL, Volume 06, Issue 13,2011, Pages 242-243, doi:10.3969/j.issn.1673-7555.2011.13.184
HUBEI AGRICULTURAL SCIENCES, Volume 50, Issue 13,2011, Pages 2680-2682,2688, doi:10.3969/j.issn.0439-8114.2011.13.027