@article{3044550,
    title = "VALUE OF HIGH AND LOW MATERNAL SERUM ALPHA-FETOPROTEIN LEVELS IN
SCREENING SINGLETON PREGNANCIES",
    author = "MINARETZIS, D and TSIONOU, C",
    journal = "American Journal of Obstetrics and Gynecology",
    year = "1991",
    volume = "165",
    number = "3",
    pages = "780",
    publisher = "Mosby Year Book Inc",
    issn = "0002-9378, 1097-6868",
    doi = "10.1016/0002-9378(91)90331-K"
}