MEDICAL RECAPITULATE, Volume 15, Issue 15,2009, Pages 2373-2374, doi:10.3969/j.issn.1006-2084.2009.15.049
MATERNAL AND CHILD HEALTH CARE OF CHINA, Volume 24, Issue 15,2009, Pages 2132-2134,
CHINESE COMMUNITY DOCTORS, Volume 11, Issue 15,2009, Pages 64, doi:10.3969/j.issn.1007-614x.2009.15.077
FAMILY NURSE, Volume 7, Issue 15,2009, Pages 1361-1361, doi:10.3969/j.issn.1674-4748.2009.15.035
HEBEI MEDICAL JOURNAL, Volume 31, Issue 15,2009, Pages 1927-1928, doi:10.3969/j.issn.1002-7386.2009.15.031