1 Institute for Clinical Effectiveness and Health Policy (IECS), National Scientific and Technical Research Council, Buenos Aires C1414CPV, Argentina; School of Public Health, University of Buenos Aires, Buenos Aires, Argentina. Electronic address: apichon@iecs.org.ar.
2 Centre for Health Economics, University of York, York, UK.
3 Institute for Clinical Effectiveness and Health Policy (IECS), National Scientific and Technical Research Council, Buenos Aires C1414CPV, Argentina; Department of Economics, University of Buenos Aires, Buenos Aires, Argentina.
4 Institute for Clinical Effectiveness and Health Policy (IECS), National Scientific and Technical Research Council, Buenos Aires C1414CPV, Argentina.
5 Institute for Clinical Effectiveness and Health Policy (IECS), National Scientific and Technical Research Council, Buenos Aires C1414CPV, Argentina; School of Public Health, University of Buenos Aires, Buenos Aires, Argentina.