1. Department of Economics and Finance, University of Rome Tor Vergata, 00133 Rome, Italy
2. Faculty of Political and Social Sciences, Scuola Normale Superiore, 56126 Pisa, Italy
3. Department of Civil Engineering and Computer Science Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
4. Department of Economics and Statistics “Cognetti de Martiis”, University of Turin, 10153 Torino, Italy
5. Collegio Carlo Alberto, University of Turin, 10122 Torino, Italy
6. Department of Economics, Roma Tre University, 00145 Rome, Italy
7. Institute for Global Health, University College London, London WC1N 1DP, UK