TY  - RPRT
TI  - Does unexplained second-trimester (15 to 20 weeks' gestation) maternal serum alpha-fetoprotein elevation presage adverse perinatal outcome? Pitfalls and preliminary studies with late second- and third-trimester maternal serum alpha-fetoprotein.
AU  - J L Simpson
AU  - S Elias
AU  - C D Morgan
AU  - R N Andersen
AU  - L P Shulman
AU  - B M Sibai
AU  - B M Mercer
AU  - A Skoll
PY  - 1991
DO  - 10.1016/0002-9378(91)90525-v
UR  - https://pubmed.ncbi.nlm.nih.gov/1706141/
ID  - 1706141
ER  -