Disease and fertility: evidence from the 1918 influenza pandemic in Sweden / Nina Boberg-Fazlić (University of Southern Denmark), Maryna Ivets (University of Duisburg-Essen), Martin Karlsson (University of Duisburg-Essen and IZA), Therese Nilsson (Lund University and IFN) ; IZA Institute of Labor Economics. Bonn, Germany : IZA Institute of Labor Economics, June 2017