Krarup, A P S, Engsbro, A L Ø, Fassov, J, Fynne, L, Bak Christensen, A & Bytzer, P 2017, ' Danish national guideline : Diagnosis and treatment of Irritable Bowel Syndrome ', Danish Medical Journal, vol. 64, no. 6, B5382 . < http://www.danmedj.dk/portal/pls/portal/!PORTAL.wwpob_page.show?_docname=11667605.PDF > Krarup, A L, Engsbro, A L O, Fassov, J, Fynne, L, Christensen, A B & Bytzer, P 2017, ' Danish national guideline : Diagnosis and treatment of Irritable Bowel Syndrome ', Danish Medical Journal, vol. 64, no. 6, 5382 .