CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 9, Issue 1,2006, Pages 51-54, doi:10.3760/cma.j.issn.1007-9408.2006.01.018
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 9, Issue 1,2006, Pages 68-69, doi:10.3760/cma.j.issn.1007-9408.2006.01.025
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 9, Issue 1,2006, Pages 28-31, doi:10.3760/cma.j.issn.1007-9408.2006.01.009
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 9, Issue 1,2006, Pages 48-50, doi:10.3760/cma.j.issn.1007-9408.2006.01.017
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 9, Issue 1,2006, Pages 36-39,插图1-1, doi:10.3760/cma.j.issn.1007-9408.2006.01.011