CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 7, Issue 5,2004, Pages 293-294, doi:10.3760/cma.j.issn.1007-9408.2004.05.012
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 7, Issue 5,2004, Pages 318-319, doi:10.3760/cma.j.issn.1007-9408.2004.05.022
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 7, Issue 5,2004, Pages 315-317, doi:10.3760/cma.j.issn.1007-9408.2004.05.020
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 7, Issue 5,2004, Pages 305-308, doi:10.3760/cma.j.issn.1007-9408.2004.05.017
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 7, Issue 5,2004, Pages 296, doi:10.3760/cma.j.issn.1007-9408.2004.05.014