CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 1,2010, Pages 20-23, doi:10.3760/cma.j.issn.1007-9408.2010.01.007
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 1,2010, Pages 55-57, doi:10.3760/cma.j.issn.1007-9408.2010.01.015
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 1,2010, Pages 79-80, doi:10.3760/cma.j.issn.1007-9408.2010.01.027
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 1,2010, Pages 69-71, doi:10.3760/cma.j.issn.1007-9408.2010.01.022
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 1,2010, Pages 24-28, doi:10.3760/cma.j.issn.1007-9408.2010.01.008