The investigators aim to set up a biobanking study in Graz, Austria, to study sarcopenia in liver cirrhosis and chronic inflammatory bowel disease by collecting a standardized dataset including routine clinical and biochemical tests; biosamples to assess novel biomarker as well as advanced clinical assessments. In a small country like Austria, a nationwide biobanking study can enhance research enormously. The investigators therefore aim to extend the registry to all tertiary liver care centers in Austria in a second step.