TY  - RPRT
TI  - Classifying inflammatory bowel disease.
AU  - F T de Dombal
PY  - 1983
DO  - 10.7326/0003-4819-98-3-412_1
UR  - https://pubmed.ncbi.nlm.nih.gov/6830087/
ID  - 6830087
ER  -