Francisca Crispi1, Avi Cherla2, Ennio A Vivaldi3, Elias Mossialos4. 1. School of Public Health, University of Chile, Santiago, Chile. 2. Department of Health Policy, London School of Economics and Political Science, London WC2A 2AE, UK. 3. University of Chile, Santiago, Chile. 4. Department of Health Policy, London School of Economics and Political Science, London WC2A 2AE, UK. Electronic address: e.a.mossialos@lse.ac.uk.