1.
Farthing M, Roberts SE, Samuel DG, Williams JG, Thorne K, Morrison-Rees S, John A, Akbari A, Williams JC. Survey of digestive health across Europe: Final report. Part 1: The burden of gastrointestinal diseases and the organisation and delivery of gastroenterology services across Europe. United European Gastroenterol J 2014; 2: 539-43.