TY  - RPRT
TI  - Screening for twin pregnancy.
AU  - L Jovanovic
AU  - R Landesman
AU  - B B Saxena
PY  - 1977
DO  - 10.1126/science.910156
UR  - https://pubmed.ncbi.nlm.nih.gov/910156/
ID  - 910156
ER  -