TY - RPRT TI - First-trimester screening for aneuploidy. AU - Karlla W Brigatti AU - Fergal D Malone PY - 2004 DO - 10.1016/s0889-8545(03)00119-0 UR - https://pubmed.ncbi.nlm.nih.gov/15062444/ ID - 15062444 ER -