The study of Nicolaides et al, “Noninvasive prenatal testing for fetal trisomies in a routinely screened first-trimester population,” demonstrates that techniques analyzing cell free fetal DNA in the maternal circulation can…

We thank Dr Moise et al for their interest and congratulations for our Society for Maternal-Fetal Medicine (SMFM) clinical guideline on twin-twin transfusion syndrome. Dr Moise et al have a concern that…

We read with great interest the recent Society for Maternal-Fetal Medicine. Guideline regarding the diagnosis and treatment of twin-twin transfusion. We congratulate Dr Simpson and the Society for Maternal-Fetal Medicine…

We thank Drs Quintero, Chmait, and Kontopoulos for their interest in our Society for Maternal-Fetal Medicine clinical guideline on twin-twin transfusion syndrome (TTTS). They are concerned that the Eunice Kennedy…

We read with interest the review article of the Society for Maternal-Fetal Medicine (SMFM) on twin-twin transfusion syndrome (TTTS). A salient conclusion of the article is that, “Fetoscopic laser photocoagulation…

We appreciate the interest that Drs Aznar and Cerdá have expressed in our Clinical Opinion piece. We did not intend to minimize the importance of factor V Leiden as a…

I read with great interest the article, Factor V Leiden carriers taking oral contraceptives have an increased risk of thrombosis, published in the Journal this January, in which the authors…

The article below summarizes a roundtable discussion of a study published in this issue of the Journal in light of its methodology, relevance to practice, and implications for future research. Article…