1 Science Domain on Land Health Decisions at the World Agroforestry Centre, Nairobi, Kenya, and co-leader of Decision Analysis and Information Systems in the Research Programme on Water, Land & Ecosystems of the Consultative Group for International Agricultural Research, Montpellier, France.
2 Hubbard Decision Research, Chicago, Illinois, USA.
3 Queen Mary, University of London, UK, and chief executive of Agena, Cambridge, UK.
4 Department of Economics and Related Studies, and senior research fellow in the Centre for Health Economics at the University of York, UK.