CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 4,2010, Pages 318-323, doi:10.3760/cma.j.issn.1007-9408.2010.04.013
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 4,2010, Pages 338-340, doi:10.3760/cma.j.issn.1007-9408.2010.04.020
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 4,2010, Pages 329-330, doi:10.3760/cma.j.issn.1007-9408.2010.04.016
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 4,2010, Pages 268-272, doi:10.3760/cma.j.issn.1007-9408.2010.04.002
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 4,2010, Pages 333-335, doi:10.3760/cma.j.issn.1007-9408.2010.04.018