CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 7,2011, Pages 447-448, doi:10.3760/cma.j.issn.1007-9408.2011.07.015
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 7,2011, Pages 439-442, doi:10.3760/cma.j.issn.1007-9408.2011.07.013
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 7,2011, Pages 390-395, doi:10.3760/cma.j.issn.1007-9408.2011.07.002
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 7,2011, Pages 409-411, doi:10.3760/cma.j.issn.1007-9408.2011.07.005
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 7,2011, Pages 436-438, doi:10.3760/cma.j.issn.1007-9408.2011.07.012