1 Department of Gastroenterology, São João University HospitalPorto, Portugal; WGO Gastroenterology and Hepatology Training CenterPorto, Portugal; Faculty of Medicine, University of PortoPorto, Portugal.
2 Department of Gastroenterology, São João University HospitalPorto, Portugal; WGO Gastroenterology and Hepatology Training CenterPorto, Portugal.
3 Department of Gastroenterology, São João University HospitalPorto, Portugal; WGO Gastroenterology and Hepatology Training CenterPorto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal.
4 Department of Mechanical Engineering, Faculty of Engineering of the University of PortoPorto, Portugal; Institute of Science and Innovation in Mechanical and Industrial EngineeringPorto, Portugal.