TY - GEN AU - De Dombal,F T TI - Ulcerative colitis: definition, historical background, aetiology, diagnosis, naturel history and local complications SN - 0032-5473 PY - 1969///0305 KW - Colitis, Ulcerative KW - Humans N1 - Publication Type: Journal Article UR - https://doi.org/10.1136/pgmj.44.515.684 ER -