CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 3, Issue 4,2000, Pages 217-220, doi:10.3760/cma.j.issn.1007-9408.2000.04.008
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 3, Issue 4,2000, Pages 223, doi:10.3760/cma.j.issn.1007-9408.2000.04.030
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 3, Issue 4,2000, Pages 248-250, doi:10.3760/cma.j.issn.1007-9408.2000.04.021
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 3, Issue 4,2000, Pages 199-201, doi:10.3760/cma.j.issn.1007-9408.2000.04.002
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 3, Issue 4,2000, Pages 264-265, doi:10.3760/cma.j.issn.1007-9408.2000.04.027