CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 6,2008, Pages 441-448,
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 6,2008, Pages 435, doi:10.3760/cma.j.issn.1007-9408.2008.06.021
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 6,2008, Pages 416-417, doi:10.3760/cma.j.issn.1007-9408.2008.06.014
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 6,2008, Pages 369-372, doi:10.3760/cma.j.issn.1007-9408.2008.06.003
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 6,2008, Pages 436-437, doi:10.3760/cma.j.issn.1007-9408.2008.06.022