1. AP-OSI Research Unit, Alto Deba Integrated Healthcare Organisation, Mondragón, Spain
2. Biodonostia Health Research Institute, San Sebastian, Spain
3. Kronikgune, Baracaldo, Spain
4. Health Information Management SL, Barcelona, Spain
5. HealThink—Medical Research & Innovation LP, Thessaloniki, Greece
6. University Hospital and Health Services of Trieste, Trieste, Italy
7. Health Services Research on Chronic Patients Network (REDISSEC), Bilbao, Spain