TY  - RPRT
TI  - Chorionic villus sampling versus early amniocentesis.
AU  - B Eiben
AU  - W Hammans
AU  - R Goebel
PY  - 1997
DO  - 10.1016/s0140-6736(05)63489-7
UR  - https://pubmed.ncbi.nlm.nih.gov/9652593/
ID  - 9652593
ER  -