TY  - RPRT
TI  - Chorionic villus sampling: experience with 3016 cases performed by a single operator.
AU  - J Williams
AU  - B B Wang
AU  - C H Rubin
AU  - D Aiken-Hunting
PY  - 1992
UR  - https://pubmed.ncbi.nlm.nih.gov/1448247/
ID  - 1448247
ER  -