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More invasive procedures are done to detect each case of Down's syndrome in younger women.
Marttala J, Ranta JK, Kaijomaa M, Nieminen P, Laitinen P, Kokkonen H, Romppanen J, Hamalainen E, Kultti J, Tekay A, Ulander VM, Honkasalo T, Ryynanen M. Marttala J, et al. Among authors: hamalainen e. Acta Obstet Gynecol Scand. 2011 Jun;90(6):642-7. doi: 10.1111/j.1600-0412.2011.01113.x. Epub 2011 Apr 15. Acta Obstet Gynecol Scand. 2011. PMID: 21355862 Free article.
False-negative results in routine combined first-trimester screening for down syndrome in Finland.
Marttala J, Kaijomaa M, Ranta J, Dahlbacka A, Nieminen P, Tekay A, Kokkonen H, Laitinen P, Ignatius J, Romppanen J, Heinonen S, Jarvela I, Heikkila M, Yla-Outinen A, Ulander VM, Hamalainen E, Ryynanen M. Marttala J, et al. Among authors: hamalainen e. Am J Perinatol. 2012 Mar;29(3):211-6. doi: 10.1055/s-0031-1285095. Epub 2011 Aug 10. Am J Perinatol. 2012. PMID: 21833895
First trimester biochemistry at different maternal ages.
Ranta JK, Marttala J, Laitinen P, Kultti J, Kauhanen O, Romppanen J, Hämäläinen E, Heinonen S, Pulkki K, Ryynänen M. Ranta JK, et al. Among authors: hamalainen e. Clin Chem Lab Med. 2011 Nov 24;50(3):549-55. doi: 10.1515/CCLM.2011.785. Clin Chem Lab Med. 2011. PMID: 22112052
251 results