HAINAN MEDICAL JOURNAL, Volume 22, Issue 14,2011, Pages 95-97, doi:10.3969/j.issn.1003-6350.2011.14.044
CONTEMPORARY MEDICINE, Volume 17, Issue 14,2011, Pages 107-108, doi:10.3969/j.issn.1009-4393.2011.5.039
THE JOURNAL OF PRACTICAL MEDICINE, Volume 27, Issue 14,2011, Pages 2498, doi:10.3969/j.issn.1006-5725.2011.14.002
CHINESE JOURNAL OF NOSOCOMIOLOGY, Volume 21, Issue 14,2011, Pages 2962-2964,