1. G. Emmanuel Guindon is with the Centre for Health Economics and Policy Analysis and the Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton. Guillermo R. Paraje is with the Escuela de Negocios, Universidad Adolfo Ibáñez, Santiago, Chile. Frank J. Chaloupka is with the Department of Economics and the Institute for Health Research and Policy, University of Illinois, Chicago, and the US National Bureau of Economic Research, Cambridge, MA.