Current difficulties in use of maternal serum alpha-fetoprotein levels in counseling mid-trimester older pregnant women regarding risk of a Down syndrome fetus.
作者信息
Hook E B
机构信息
Department of Social and Administrative Health Sciences, School of Public Health, University of California, Berkeley 94720.
出版信息
Am J Med Genet. 1988 Sep;31(1):247-50. doi: 10.1002/ajmg.1320310131.