1. Fayers P, Hays R (eds): Assessing Quality of Life in Clinical Trials: Methods and Practice, ed 2. Oxford, Oxford University Press, 2005, p 467.
2. The MOS 36-ltem Short-Form Health Survey (SF-36)
3. Bergner M: The sickness impact profile (SIP); in Wenger N, Mattson M, Furberg C, Elinson J (eds): Assessment of Quality of Life in Clinical Trials of Cardiovascular Therapies. New York, Le Jacq Publishing, 1984, pp 334-341.
4. EuroQol - a new facility for the measurement of health-related quality of life
5. Hunt S, McKenna S: The Nottingham Health Profile User's Manual. Manchester, Galen Research and Consultancy, 1991.