1. Newcastle University; Institute of Health and Society, School of Education, Communication and Language Sciences; Queen Victoria Road Newcastle-upon-Tyne UK NE1 7RU
2. Gaskell Building; Health Economics Research Group (HERG); Brunel University Uxbridge Middlesex UK UB8 3PH
3. University of Central Florida; UCF CARD Center; 12001 Science Dr. Suite 145 Orlando Florida USA FL 32826