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Websites
- US Department of Health and Human Services (USDHHS). Draft guidance for industry. Patient-Reported Outcome Measures: Use in Medical Product Development to Support Labeling Claims (February 2006) www.ispor.org/workpaper/FDAPROGuidance2006.pdf (Accessed 1 December 2010)
- US Department of Health and Human Services (USDHHS). Guidance for industry. Patient-Reported Outcome Measures: Use in Medical Product Development to Support Labeling Claims (December 2009) www.fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/UCM193282.pdf (Accessed 1 December 2010)