TY  - RPRT
TI  - Placenta previa: a 22-year analysis.
AU  - M C Frederiksen
AU  - R Glassenberg
AU  - C S Stika
PY  - 1999
DO  - 10.1016/s0002-9378(99)70031-1
UR  - https://pubmed.ncbi.nlm.nih.gov/10368483/
ID  - 10368483
ER  -