CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 8,2011, Pages 512, doi:10.3760/cma.j.issn.1007-9408.2011.08.018
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 8,2011, Pages 493-495, doi:10.3760/cma.j.issn.1007-9408.2011.08.010
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 8,2011, Pages 449-452, doi:10.3760/cma.j.issn.1007-9408.2011.08.001
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 8,2011, Pages 495-497, doi:10.3760/cma.j.issn.1007-9408.2011.08.011
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 14, Issue 8,2011, Pages 498-500, doi:10.3760/cma.j.issn.1007-9408.2011.08.012