TY  - RPRT
TI  - Endoscopy in inflammatory bowel disease.
AU  - P Rutgeerts
AU  - G Vantrappen
AU  - K Geboes
PY  - 1989
DO  - 10.3109/00365528909091341
UR  - https://pubmed.ncbi.nlm.nih.gov/2617183/
ID  - 2617183
ER  -