1. Professor of Economics, University of Rome Tor Vergata, Rome, Italy; Research Fellow, Center for Economic Policy Research, London, United Kingdom.
2. Assistant Professor of Finance, Kellogg School of Management, Northwestern University, Evanston, Illinois; Faculty Research Fellow, National Bureau of Economic Research, Cambridge, Massachusetts; Research Fellow, Center for Economic Policy Research, London, United Kingdom.
3. Professor of Entrepreneurship and Finance, Graduate School of Business, University of Chicago, Chicago, Illinois; Faculty Research Fellow, National Bureau of Economic Research, Cambridge, Massachusetts; Research Fellow, Center for Economic Policy Research, London, United Kingdom.