1. Institute of Health Studies, Health Department, Generalitat de Catalunya, Spain
2. Preventive Medicine and Hospital Epidemiology Department, Hospital Clínic, University of Barcelona, Barcelona, Spain
3. Official College of Pharmacists of Barcelona, Spain
4. Department of Epidemiology and Evaluation, Hospital del Mar, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Catalonia, Spain
5. Department of Gastroenterology, Hospital Clínic, CIBERehd, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain
6. Planning and Research Unit, Pharmaceutical Council of Catalonia, Spain