[1] Univ Pompeu Fabra, Barcelona IPEG, BSE, Barcelona, Spain
[2] New Econ Sch, Moscow, Russia
[3] Duke Univ, Econ & Polit Sci, Durham, NC 27708 USA
[4] Duke Univ, Islamic Studies, Durham, NC 27708 USA
[5] Stanford Univ, Stanford Inst Econ Policy Res, Stanford Ctr Int Dev, Stanford, CA USA