CHINA JOURNAL OF MODERN MEDICINE, Volume 18, Issue 21,2008, Pages 3126-3129,
PERSON, Volume 15, Issue 21,2008, Pages 31, doi:10.3969/j.issn.1674-4721.2008.21.023
CHINA PRACTICAL MEDICINE, Volume 3, Issue 21,2008, Pages 114, doi:10.3969/j.issn.1673-7555.2008.21.074
JOURNAL OF QIQIHAR MEDICAL COLLEGE, Volume 29, Issue 21,2008, Pages 2620-2621, doi:10.3969/j.issn.1002-1256.2008.21.037
JOURNAL OF NURSES TRAINING, Volume 23, Issue 21,2008, Pages 1988-1989, doi:10.3969/j.issn.1002-6975.2008.21.033