American Enterprise Institute (AEI), IEA, Institute of Economic Affairs, U.K., City University London - Sir John Cass Business School, Lombard Street Research, Independent Healthcare Association (IHA), National Health Service, CIVITAS: The Institute for the Study of Civil Society, Institute of Economic Affairs (IEA) - UK, City University of London - Institute of Economic Affairs, Institute of Economic Affairs (IEA), Cardiff University Business School, Charles River Associates, Incorporated, International Center for Law and Economics, Volterra Consulting, London School of Economics & Political Science (LSE) - Interdisciplinary Institute of Management, University of London - Department of Political Economy, London School of Economics & Political Science (LSE), Independent, University of Westminster and University of Newcastle - E.G. West Centre

IEA, Institute of Economic Affairs, U.K., George Mason University - Center for Study of Public Choice, London School of Economics & Political Science (LSE), Cato Institute, Institute of Economic Affairs (IEA) - UK, University of California, Los Angeles (UCLA) - Department of Economics, University of Geneva, London School of Economics & Political Science (LSE), Centre for Civil Society, AIG International, Inc. and Independent

Institute of Economic Affairs (IEA) - UK and Independent

Independent, Institute of Economic Affairs (IEA) - UK and Independent

Institute of Economic Affairs (IEA) - UK, Independent, Classical Net and Society for the Protection of Unborn Children