CHINESE COMMUNITY DOCTORS, Volume 11, Issue 16,2009, Pages 209-210, doi:10.3969/j.issn.1007-614x.2009.16.256
CHINESE GENERAL PRACTICE, Volume 12, Issue 16,2009, Pages 1495-1498, doi:10.3969/j.issn.1007-9572.2009.16.012
MATERNAL AND CHILD HEALTH CARE OF CHINA, Volume 24, Issue 16,2009, Pages 2294-2295,
MEDICAL JOURNAL OF CHINESE PEOPLE'S HEALTH, Volume 21, Issue 16,2009, Pages 1933, doi:10.3969/j.issn.1672-0369.2009.16.022
SHANDONG MEDICAL JOURNAL, Volume 49, Issue 16,2009, Pages 60-61, doi:10.3969/j.issn.1002-266X.2009.16.028