1. Does Free Care Improve Adults' Health?
2. The Medical Outcomes Study
3. U.S. Department of Health and Human Services, & Food and Drug Administration. Guidance for Industry: Patient-Reported Outcome Measures: Use in Medical Product Development to Support Labeling Claims. Silver Spring, MD: U.S. Food and Drug Administration; 2009.
4. U.S. Department of Health and Human Services, Food and Drug Administration, Center for Drug Evaluation and Research, & Center for Biologics Evaluation and Research. Guidance for Industry: Clinical Trial Endpoints for the Approval of Non-Small Cell Lung Cancer Drugs and Biologics. Silver Spring, MD: U.S. Food and Drug Administration; 2015.