TY  - RPRT
TI  - Trisomy 18 in chorionic villus sampling: problems and consequences.
AU  - A Wirtz
AU  - K P Gloning
AU  - J Murken
PY  - 1991
DO  - 10.1002/pd.1970110812
UR  - https://pubmed.ncbi.nlm.nih.gov/1766931/
ID  - 1766931
ER  -