@conference{2ea61566461f4c8091f214430933c93a,
title = "The influence of undernourishment on twin pregnancies during world war II in the Netherlands",
keywords = "Econometric and Statistical Methods: General, Financial Economics, Clinical sciences, Geneeskunde(GENK), Medisch onderzoek, ziekenhuisbehandeling en chirurgie",
author = "J.B. Derks and Y. Keehnen and I. langhout and S.G. Elias and G.H.A. Visser",
year = "2003",
language = "Undefined/Unknown",
pages = "36A--37A",
note = "Unknown event ; Conference date: 01-01-2004",
}