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JOURNAL OF QILU NURSING, Volume 17, Issue 21,2011, Pages 84-86, doi:10.3969/j.issn.1006-7256.2011.21.062
Chinese Journal of Primary Medicine and Pharmacy, Volume 18, Issue 21,2011, Pages 3002-3004, doi:10.3760/cma.j.issn.1008-6706.2011.21.088
MEDICAL INNOVATION OF CHINA, Volume 08, Issue 21,2011, Pages 75-76, doi:10.3969/j.issn.1674-4985.2011.21.040