1. Center for Medical Technology Policy, World Trade Center Baltimore, 401 East Pratt Street, Suite 631, Baltimore, MD 21202, USA
2. Patient-Centered Outcomes Research Institute (PCORI), 1828 L Street, NW, 9th Floor, Washington DC 20036, USA
3. Office of Health Economics; 7th Floor, Southside, 105 Victoria Street, London, SW1E 6QT, UK