1. QALYs: the basics;Weinstein;Value Health,2009
2. An approach to measuring and valuing health states;Sintonen;Soc Sci Med Med Econ,1981
3. The 15-D measure of health-related quality of life: reliability, validity and sensitivity of its health state descriptive system;Sintonen,1994
4. The 15D-measure of health-related quality of life, II: feasibility, reliability and validity of its valuation system;Sintonen,1995
5. Sintonen H. 15D instrument homepage. Available from: http://www.15d-instrument.net/15d/. [Accessed June 29, 2017].