1. Max Planck Institute for Demographic Research, Konrad-Zuse-Str. 1, 18057 Rostock, Germany
2. Federal Institute for Population Research, Wiesbaden, Germany
3. Vytautas Magnus University, Kaunas, Lithuania
4. Centre for Economic Demography and Department of Economic History, Lund University, Lund, Sweden
5. Department of Statistical Sciences, University of Bologna, Bologna, Italy