TY  - RPRT
TI  - Letter: Ulcerative colitis in the elderly.
AU  - J O Gebbers
AU  - H F Otto
PY  - 1975
DO  - 10.1016/s0140-6736(75)90819-3
UR  - https://pubmed.ncbi.nlm.nih.gov/52093/
ID  - 52093
ER  -