1 Evidence Synthesis and Modelling for Health Improvement, Institute of Health Research, University of Exeter Medical School, Exeter EX1 2LU, UK; and the Centre for Research on Health and Social Care Management, Bocconi University, 20100 Milan, Italy.
2 International Drug Development Institute, 1340 Louvain-la-Neuve, Belgium.
3 Centre for Health Economics, University of York, York YO10 5DD, UK.
4 European Medicine Agency, London E14 5EU, UK; and the University of Rome Tor Vergata, 00173 Rome, Italy.
5 Dendrix Research, 04534-000 Sao Paulo, Brazil.
6 Evidence Synthesis and Modelling for Health Improvement, Institute of Health Research, University of Exeter Medical School, Exeter EX1 2LU, UK.