1. International Institute for Applied Systems Analysis (IIASA), World Population Program; Laxenburg Austria
2. Cracow University of Economics; Cracow Poland
3. Centre for Economic Demography; Lund University; Sweden
4. Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/OAW, WU); Vienna Institute of Demography; Vienna Austria
5. Columbia Aging Centre; Columbia University; U.S.A.