CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 4,2008, Pages 235-236, doi:10.3760/cma.j.issn.1007-9408.2008.04.007
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 4,2008, Pages 237-240, doi:10.3760/cma.j.issn.1007-9408.2008.04.008
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 4,2008, Pages 274-276, doi:10.3760/cma.j.issn.1007-9408.2008.04.018
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 4,2008, Pages 217, doi:10.3760/cma.j.issn.1007-9408.2008.04.001