1. Evaluation Unit of the Canary Islands Health Service (SESCS); Tenerife Spain
2. Health Services Research on Chronic Patients Network (REDISSEC); Tenerife Spain
3. Center for Biomedical Research of the Canary Islands (CIBICAN); Tenerife Spain
4. Canary Islands Foundation of Health Research (FUNCANIS); Tenerife Spain
5. Health Decision Sciences Center (HDSC); Massachusetts General Hospital; Boston MA USA