GUANGDONG MEDICAL JOURNAL, Volume 33, Issue 13,2012, Pages 1962-1964, doi:10.3969/j.issn.1001-9448.2012.13.042
Medicine & Philosophy, Volume 33, Issue 13,2012, Pages 60-61,
Chinese Journal of Nosocomiology, Volume 22, Issue 13,2012, Pages 2902-2904,
Gansu Science and Technology, Volume 28, Issue 13,2012, Pages 117-119, doi:10.3969/j.issn.1000-0952.2012.13.048