[1] Bundesinstitut Bevolkerungsforschung BiB, Friedrich Ebert Allee 4, D-65185 Wiesbaden, Germany
[2] Max Planck Inst Demograf Forsch, Rostock, Germany
[3] Vytautas Magnus Univ, Demograf Forschungszentrum, Kaunas, Lithuania
[4] Max Planck Univ, Helsinki Ctr Social Inequal Populat Hlth, Helsinki, Finland
[5] Univ Cologne, Cologne, Germany