CHINA HEALTHCARE FRONTIERS, Volume 03, Issue 23,2008, Pages 53, doi:10.3969/j.issn.1673-5552.2008.23.041
JOURNAL OF NURSES TRAINING, Volume 23, Issue 23,2008, Pages 2174-2176, doi:10.3969/j.issn.1002-6975.2008.23.031
SHANDONG MEDICAL JOURNAL, Volume 48, Issue 23,2008, Pages 44, doi:10.3969/j.issn.1002-266X.2008.23.088
CHINESE JOURNAL OF MODERN DRUG APPLICATION, Volume 2, Issue 23,2008, Pages 203, doi:10.3969/j.issn.1673-9523.2008.23.166