Items where Author is "Köllner, Volker"
Group by: Document type | No Grouping
Number of items: 1.
Schäfer, Sarah K. ; Weidner, Kathrin Julia ; Hoppner, Jorge ; Becker, Nicolas ; Friedrich, Dana ; Stokes, Caroline S. ; Lammert, Frank ; Köllner, Volker (2017) Design and validation of a German version of the GSRS-IBS - an analysis of its psychometric quality and factorial structure. BMC Gastroenterology, 17 (139). pp. 1-8. ISSN 1471-230X