1. Department of Economics, Uppsala University, Uppsala Center for Labor Studies (UCLS), Institute for Evaluation of Labour Market and Education Policy (IFAU), and STIAS (e-mail: )
2. Department of Economics, Uppsala University, UCLS, IZA, and IFAU (e-mail: )
3. IFAU, UCLS, and Swedish Institute for Social Research (SOFI) (e-mail: )
4. IFAU, Uppsala University, and UCLS (e-mail: )