TY  - RPRT
TI  - Umbilical artery velocity waveforms before and after chorionic villus sampling.
AU  - R M Ibba
AU  - G Monni
AU  - G Olla
AU  - A Cao
PY  - 1994
DO  - 10.1002/pd.1970140906
UR  - https://pubmed.ncbi.nlm.nih.gov/7845886/
ID  - 7845886
ER  -