1. Department of Gastroenterology. Hospital Clínico Universitario San Carlos, And Instituto De Investigación Del Hospital Clínico San Carlos [Idissc], Madrid, Spain
2. Health Economics, Pharmacoeconomics & Outcomes Research Iberia (PORIB), Madrid, Spain
3. Department of Gastroenterology. Hospital Universitario Miguel Servet, Zaragoza, Spain
4. Hospital Pharmacy Department Hospital Universitario Puerta De Hierro-Majadahonda, Madrid, Spain
5. Pfizer S.L.U, Alcobendas, Madrid, Spain
6. Department of Gastroenterology. Hospital General Universitario Gregorio Marañón, And Instituto De Investigación Sanitaria Gregorio Marañón, Madrid, Spain
7. Department of Medicine, Universidad Complutense De Madrid, Madrid, Spain