CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 5,2008, Pages 338-342, doi:10.3760/cma.j.issn.1007-9408.2008.05.013
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 5,2008, Pages 307-310, doi:10.3760/cma.j.issn.1007-9408.2008.05.005
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 5,2008, Pages 358-359, doi:10.3760/cma.j.issn.1007-9408.2008.05.021
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 5,2008, Pages 323-328, doi:10.3760/cma.j.issn.1007-9408.2008.05.010
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 11, Issue 5,2008, Pages 315-318, doi:10.3760/cma.j.issn.1007-9408.2008.05.008