1. Center for Research in Health Technologies and Information Systems (CINTESIS)Faculty of Medicine of the University of Porto (FMUP)PortoPortugal
2. Gastroenterology DepartmentPortuguese Oncology Institute of CoimbraCoimbraPortugal
3. Department of Gastroenterology & HepatologyErasmus MC University Medical CenterRotterdamZuid‐hollandThe Netherlands
4. Gastroenterology DepartmentPortuguese Oncology Institute of PortoPortoPortugal