![](/img/cover-not-exists.png)
First-trimester maternal serum alphafetoprotein and chorionic gonadotropin in aneuploid pregnancies
Anthony Johnson, F. Susan Cowchock, Marilyn Darby, Ronald Wapner, Laird G. JacksonVolume:
11
Year:
1991
Language:
english
Pages:
8
DOI:
10.1002/pd.1970110706
File:
PDF, 443 KB
english, 1991