@article{abf94ab06bda44dca31d2c00de0de21a,
title = "Lack of standardization in determining gestational age for prenatal screening",
author = "M.P.H. Koster and \{van Leeuwen-Spruijt\}, M. and E.J. Wortelboer and Ph. Stoutenbeek and L.H. Elvers and J.G. Loeber and G.H.A. Visser and P.C.J.I. Schielen",
year = "2008",
language = "Undefined/Unknown",
volume = "32",
pages = "607--611",
journal = "Ultrasound in Obstetrics and Gynecology",
issn = "0960-7692",
publisher = "John Wiley \& Sons Inc.",
number = "5",
}