CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 8, Issue 6,2005, Pages 435, doi:10.3760/cma.j.issn.1007-9408.2005.06.027
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 8, Issue 6,2005, Pages 413-414, doi:10.3760/cma.j.issn.1007-9408.2005.06.018
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 8, Issue 6,2005, Pages 361-365, doi:10.3760/cma.j.issn.1007-9408.2005.06.001
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 8, Issue 6,2005, Pages 393-396, doi:10.3760/cma.j.issn.1007-9408.2005.06.009