1. Guidance for industry patient-reported outcome measures: use in medical product development to support labelling claims;U.S. Food and Drug Administration (FDA);Fed Reg,2009
2. Health related quality of life expert working group of the International Prophylaxis Study Group. Measuring patient-reported outcomes in haemophilia clinical research;Globe;Haemophilia,2009
3. Patient Centered Outcomes Research Institute (PCORI) Patient Centered Outcomes Research Institute: About Us http://www.pcori.org/about/
4. European Medicines Agency Committee for Medicinal Products for Human Use Reflection Paper on the Regulatory Guidance for the Use of Health Related Quality of Life (HRQL) Measures in the Evaluation of Medicinal Products
5. National Health Service (NHS) PROMIS ® Instrument Development and Psychometric Evaluation Scientific Standards http://www.nihpromis.org/Documents/PROMIS_Standards_050212.pdf