TY  - RPRT
TI  - [Chronically active Crohn's disease].
AU  - J Hoffmann
AU  - M Zeitz
AU  - German Society for Digestive and Metabolic Diseases
PY  - 2003
DO  - 10.1055/s-2003-36665
UR  - https://pubmed.ncbi.nlm.nih.gov/12541171/
ID  - 12541171
ER  -