TY  - RPRT
TI  - Ulcerative colitis.
AU  - L Beeley
AU  - R H Leach
PY  - 1971
DO  - 10.1136/bmj.2.5754.171-b
UR  - https://pubmed.ncbi.nlm.nih.gov/5581502/
ID  - 5581502
ER  -