@article{7319ea11556f45218a2b77d9cd9d0975,
title = "Distributions of current and new first-trimester Down syndrome screening markers in twin pregnancies.",
keywords = "Econometric and Statistical Methods: General, Geneeskunde (GENK), Geneeskunde(GENK), Medical sciences, Bescherming en bevordering van de menselijke gezondheid",
author = "M.P.H. Koster and E.J. Wortelboer and Ph. Stoutenbeek and G.H.A. Visser and P.C. Schielen",
year = "2010",
language = "Undefined/Unknown",
volume = "30",
pages = "413--417",
journal = "Prenatal Diagnosis",
issn = "0197-3851",
publisher = "John Wiley & Sons Inc.",
}