1. Calman K. Quality of life in cancer patients–a hypothesis. J Med Ethics 1984;10:124–127.
2. Duquette RL, Dupuis G, Perrault J. A new approach for quality of life assessment in cardiac patients: rationale and validation of the Quality of Life Systemic Inventory. Can J Cardiol 1994;10:106–112.
3. Browne JP, O’Boyle CA, McGee HM, et al. Individual quality of life in the healthy elderly. Qual Life Res 1994;3:235–244.
4. The World Heath Organization Quality of Life Assessment (WHOQOL): position paper from the World Health Organization. Soc Sci Med 1995;41:1403–1409.
5. Levine S, Croog S. What constitutes quality of life? A conceptualization of the dimensions of life quality in healthy populations and patients with cardiovascular disease. In: Wenger NK, et al. (eds). Assessment of Quality of Life in Clinical Trials of Cardiovascular Therapies. New York: Le Jacq Publishing Inc., 1984:46–58.