"Chronic Conditions: Making the Case for Ongoing Care"Archived 30 September 2022 at the Wayback Machine. Chronic Care in America: A 21st Century Challenge, a study of the Robert Wood Johnson Foundation & Partnership for Solutions: Johns Hopkins University, Baltimore, MD for the Robert Wood Johnson Foundation (September 2004 Update).
"TSA: Hidden disabilities". Transportation Security Administration, United States Government. Archived from the original on 1 July 2012. Retrieved 13 July 2012.
"TSA: Hidden disabilities". Transportation Security Administration, United States Government. Archived from the original on 1 July 2012. Retrieved 13 July 2012.
"Chronic Conditions: Making the Case for Ongoing Care"Archived 30 September 2022 at the Wayback Machine. Chronic Care in America: A 21st Century Challenge, a study of the Robert Wood Johnson Foundation & Partnership for Solutions: Johns Hopkins University, Baltimore, MD for the Robert Wood Johnson Foundation (September 2004 Update).