Maternal & Child Health Care of China, Volume 26, Issue 35,2011, Pages 5619-5621,
MEDICAL INNOVATION OF CHINA, Volume 08, Issue 35,2011, Pages 19-20, doi:10.3969/j.issn.1674-4985.2011.35.009
CHINA PRACTICAL MEDICAL, Volume 06, Issue 35,2011, Pages 179-180, doi:10.3969/j.issn.1673-7555.2011.35.137