TY - GEN AU - Platt,L D AU - Carlson,D E TI - Prenatal diagnosis--when and how? SN - 0028-4793 PY - 1992///0902 KW - Adult KW - Amniocentesis KW - adverse effects KW - Biomarkers KW - blood KW - Chorionic Villi Sampling KW - methods KW - Down Syndrome KW - diagnosis KW - Female KW - Fetal Diseases KW - Gestational Age KW - Humans KW - Maternal Age KW - Pregnancy KW - Prenatal Diagnosis N1 - Publication Type: Comment; Editorial UR - https://doi.org/10.1056/NEJM199208273270910 ER -