TY  - RPRT
TI  - Chorionic villus sampling versus amniocentesis.
AU  - R H Ward
AU  - M Lucas
PY  - 1989
DO  - 10.1016/s0140-6736(89)92191-0
UR  - https://pubmed.ncbi.nlm.nih.gov/2564502/
ID  - 2564502
ER  -