1 Gastroenterology Department. Portuguese Oncology Institute-Coimbra. Coimbra. Portugal. CINTESIS - Center for Research in Health Technologies and Information Systems, Biostatistics and Medical Informatics. Faculty of Medicine. Porto University. Porto. Portugal. [email protected].
2 Gastroenterology Department. Portuguese Oncology Institute-Porto. Porto. Portugal. & Department of Physiology. Cardiovascular Research and Development Unit. Faculty of Medicine. Porto University. Porto. Portugal.
3 CINTESIS - Center for Research in Health Technologies and Information Systems, Biostatistics and Medical Informatics. Faculty of Medicine. Porto University. Porto. Portugal. & Gastroenterology Department. Centro Hospitalar do Porto. University of Porto. Porto. Portugal..
4 CINTESIS - Center for Research in Health Technologies and Information Systems, Biostatistics and Medical Informatics. Faculty of Medicine. Porto University. Porto. Portugal.& Gastroenterology Department. Portuguese Oncology Institute-Porto. Porto. Portugal.