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First-trimester Down syndrome screening.
Hallahan TW, Krantz DA, Macri VJ, Shine TJ. Hallahan TW, et al. Among authors: macri vj. Clin Chem. 2006 Jan;52(1):160-1; author reply 161. doi: 10.1373/clinchem.2005.059279. Clin Chem. 2006. PMID: 16391341 No abstract available.
Antenatal screening for Down's syndrome.
Macri VJ, Clark R. Macri VJ, et al. BMJ. 1992 Sep 26;305(6856):768; author reply 771. doi: 10.1136/bmj.305.6856.768-b. BMJ. 1992. PMID: 1422338 Free PMC article. No abstract available.