@article{aa61d50734744280989a4619a6924e0a,
title = "Executive summary? All about validating scales and stages.",
keywords = "Econometric and Statistical Methods: General, Geneeskunde (GENK), Genetics, Geneeskunde(GENK), Algemeen onderzoek",
author = "\{den Tonkelaar\}, I. and F.J.M. Broekmans and \{de Boer\}, E.J. and \{te Velde\}, E.R.",
note = "discussion 1139-1140",
year = "2002",
language = "Undefined/Unknown",
volume = "78",
pages = "1138",
journal = "Fertility and Sterility",
issn = "0015-0282",
publisher = "Elsevier",
number = "5",
}