1. Bowling A (1997). Measuring Health: A Review of Quality of Life Measurement Scales, 2nd ed. Buckingham, Open University Press
2. Fitzpatrick R, Davey C, Buxton MJ, et al (1998). Evaluating patient-based outcome measures for use in clinical trials. Health Technol Assess 2:1–74
3. Brooks R (1996). EuroQol: the current state of play. Health Policy 37:53–72
4. Hunt SM, McEwen J, McKenna SP (1985) Measuring health status: a new tool for clinicians and epidemiologists. J R Coll Gen Pract 35:185–188
5. Brazier JE, Walters SJ, Nicholl JP, et al (1996). Using the SF-36 and Euroqol on an elderly population. Qual Life Res 5:195–204