[1] Boston Coll, Carroll Sch Management, CEPR, Newton, MA USA
[2] ECGI, Brussels, Belgium
[3] Int Monetary Fund, Washington, DC 20431 USA
[4] Nova Sch Business & Econ, CEPR, Lisbon, Portugal
[5] Univ Virginia, Darden Sch Business, Charlottesville, VA 22903 USA