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Fayers PM, Machin D. Quality of Life: The Assessment, Analysis and Interpretation of Patient-Reported Outcomes. 2. ed. Chichester: Wiley; 2007.
Green C, Brazier J, Deverill M. Valuing Health-Related Quality of Life: A Review of Health State Valuation Techniques. PharmacoEconomics. 2000;17(2):151-165.
Guyatt GH, Feeny DH, Patrick DL. Measuring Health-related Quality of Life. Annals of Internal Medicine. 1993;118(8):622-629.
Juniper EF, Guyatt GH, Jaeschke R. Chapter 6: How to develop and validate a new health-related quality of life instrument. In: Spilker B, ed. Quality of Life and Pharmacoeconomics in Clinical Trials. 2nd ed. Philadelphia: Lippincott-Raven; 1996.
Juniper EF, Guyatt GH, Streiner DL, King DR. Clinical impact versus factor analysis for quality of life questionnaire construction. Journal of Clinical Epidemiology. 1997;50(3):233-238.
Lipscomb J, Drummond M, Fryback D, Gold M, Revicki D. Retaining, and Enhancing, the QALY. Value in Health. 2009;12(Supplement 1):S18-S26.
Neumann PJ. Cost-Effectiveness in Health and Medicine. 2nd ed. Oxford : Oxford University Press; 2016.
R. D. Hays, Anderson R, D. Revicki. Psychometric Considerations in Evaluating Health-Related Quality of Life Measures. Quality of Life Research. 1993;2(6):441-449.
Eliot & Associates. Guidelines for Conducting a Focus Group. 2005.
Mack C, Woodsong C, MacQueen K, Guest G, Namey E. Qualitative Research Methods: A Data Collector’s Field Guide. Research Triangle Park, North Carolina: Family Health International; 2005.
Green C, Brazier J, Deverill M. Valuing Health-Related Quality of Life: A Review of Health State Valuation Techniques. PharmacoEconomics. 2000;17(2):151-165.
Guyatt GH, Feeny DH, Patrick DL. Measuring Health-related Quality of Life. Annals of Internal Medicine. 1993;118(8):622-629.
Juniper EF, Guyatt GH, Jaeschke R. Chapter 6: How to develop and validate a new health-related quality of life instrument. In: Spilker B, ed. Quality of Life and Pharmacoeconomics in Clinical Trials. 2nd ed. Philadelphia: Lippincott-Raven; 1996.
Juniper EF, Guyatt GH, Streiner DL, King DR. Clinical impact versus factor analysis for quality of life questionnaire construction. Journal of Clinical Epidemiology. 1997;50(3):233-238.
Lipscomb J, Drummond M, Fryback D, Gold M, Revicki D. Retaining, and Enhancing, the QALY. Value in Health. 2009;12(Supplement 1):S18-S26.
R. D. Hays, Anderson R, D. Revicki. Psychometric Considerations in Evaluating Health-Related Quality of Life Measures. Quality of Life Research. 1993;2(6):441-449.