EuroQol Group: http://www.euroqol.org/

Health Quality Council of Alberta (HQCA): http://hqca.ca/studies-and-reviews/health-outcomes-measurement/

Canadian Institute for Health Information (CIHI): https://www.cihi.ca/en/health-system-performance/quality-of-care-and-outcomes/outcomes/patient-reported-outcome-measures

Institute of Health Economics (IHE), Canada: http://www.ihe.ca/

The University of British Columbia (UBC), Patient Reported Outcomes Blog: http://patientreportedoutcomes.ca/

Mapi Research Trust: http://www.mapi-trust.org/

PROQOLID: https://eprovide.mapi-trust.org/about/about-proqolid

National Health System (NHS), UK: http://digital.nhs.uk/proms

National Centre for Health Outcomes Development at the University of Oxford (NCHOD): http://nchod.uhce.ox.ac.uk/

Office of Health Economics (OHE), UK: https://www.ohe.org/

International Society of Quality of Life Research (ISOQOL): http://www.isoqol.org/

International Society For Pharmacoeconomics and Outcomes Research (ISPOR): https://www.ispor.org/

Health Technology Assessment International (HTAi): http://www.htai.org/

Health Measures: http://www.healthmeasures.net/index.php