Cicero, S., Curcio, P., Papageorghiou, A., Sonek, J. and Nicolaides, K.H. (2001) Absence of Nasal Bone in Fetuses with Trisomy 21 at 11-14 Weeks of Gestation: An Observational Study. Lancet, 358, 1665-1667.
https://doi.org/10.1016/S0140-6736(01)06709-5

has been cited by the following article:

• TITLE: Retrospective Descriptive Analysis of the Combined First Trimester of Pregnancy Screening in the Period Included from February 2016 to March 2017, Maternal Fetal Medicine Unit, San Juan de Dios Hospital

  AUTHORS: Carina Breuning Velásquez, Oscar Durán Soto, Joaquin Bustillos Villavicencio, Jorge Mora Sandí, Eugenio Calderon, Veronica Saborio, Leonardo Jimenez, Pablo Parra

  KEYWORDS: Protocol, Combined Screening, First Trimester, Aneuploidy, Trisomy

  JOURNAL NAME: Open Journal of Obstetrics and Gynecology, Vol.8 No.10, August 27, 2018

  ABSTRACT: A retrospective descriptive study is conducted at the San Juan de Dios Hospital, San José, Costa Rica, during the period from February 2016 to March 2017, with a total of 37 patients from which a combined screening during the first trimester of pregnancy was conducted, evaluating maternal age, biochemical and sonographic methods that together can predict the risk of fetal chromosomal alterations during pregnancy. The purpose of using combined screening as a noninvasive method is to identify high risk gestations and to minimize the number of invasive procedures to detect the highest number of cases. Four patients with higher risk of aneuploidy during pregnancy were identified through this screening.