TY  - RPRT
TI  - Prenatal diagnosis--when and how?
AU  - L D Platt
AU  - D E Carlson
PY  - 1992
DO  - 10.1056/nejm199208273270910
UR  - https://pubmed.ncbi.nlm.nih.gov/1386407/
ID  - 1386407
ER  -