[S3 guideline of the German Society for Digestive and Metabolic Diseases (DGVS) and the German Society for Neurogastroenterology and Motility (DGNM) to the definition, pathophysiology, diagnosis and treatment of intestinal motility]
Z Gastroenterol. 2011 Mar;49(3):374-90.
doi: 10.1055/s-0029-1245993.
Epub 2011 Mar 9.