TY  - RPRT
TI  - Chorionic villus sampling: evaluation of obstetric performance.
AU  - N K Ng
AU  - D T Liu
PY  - 1992
DO  - 10.1111/j.1447-0756.1992.tb00296.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1627058/
ID  - 1627058
ER  -